The link says nothing about the President having authority to classify nor declassify anything. It doesn't mention the president at all.
You can post it as many times as you want, it still will not show the President having the power to classify or declassify anything.
Im not your horse and there is no water here
The EO linked actually does give the President and Vice President authority to classify information:
Sec. 1.3. Classification Authority.
(a) The authority to classify information originally may be exercised only by:
(1) the President and the Vice President;
(2) agency heads and officials designated by the President; and
(3) United States Government officials delegated this authority pursuant to paragraph (c) of this section.
(b) Officials authorized to classify information at a specified level are also authorized to classify information at a lower level.
(c) Delegation of original classification authority.
(1) Delegations of original classification authority shall be limited to the minimum required to administer this order. Agency heads are responsible for ensuring that designated subordinate officials have a demonstrable and continuing need to exercise this authority.
(2) “Top Secret” original classification authority may be delegated only by the President, the Vice President, or an agency head or official designated pursuant to paragraph (a)(2) of this section.
(3) “Secret” or “Confidential” original classification authority may be delegated only by the President, the Vice President, an agency head or official designated pursuant to paragraph (a)(2) of this section, or the senior agency official designated under section 5.4(d) of this order, provided that official has been delegated “Top Secret” original classification authority by the agency head.
(4) Each delegation of original classification authority shall be in writing and the authority shall not be redelegated except as provided in this order. Each delegation shall identify the official by name or position.
(5) Delegations of original classification authority shall be reported or made available by name or position to the Director of the Information Security Oversight Office.
(d) All original classification authorities must receive training in proper classification (including the avoidance of over-classification) and declassification as provided in this order and its implementing directives at least once a calendar year. Such training must include instruction on the proper safeguarding of classified information and on the sanctions in section 5.5 of this order that may be brought against an individual who fails to classify information properly or protect classified information from unauthorized disclosure. Original classification authorities who do not receive such mandatory training at least once within a calendar year shall have their classification authority suspended by the agency head or the senior agency official designated under section 5.4(d) of this order until such training has taken place. A waiver may be granted by the agency head, the deputy agency head, or the senior agency official if an individual is unable to receive such training due to unavoidable circumstances. Whenever a waiver is granted, the individual shall receive such training as soon as practicable.
However, unless the President classified the information to begin with, I don't see that he would have authority to declassify.
Sec. 3.1. Authority for Declassification.
(a) Information shall be declassified as soon as it no longer meets the standards for classification under this order.
(b) Information shall be declassified or downgraded by:
(1) the official who authorized the original classification, if that official is still serving in the same position and has original classification authority;
(2) the originator's current successor in function, if that individual has original classification authority;
(3) a supervisory official of either the originator or his or her successor in function, if the supervisory official has original classification authority; or
(4) officials delegated declassification authority in writing by the agency head or the senior agency official of the originating agency.
(c) The Director of National Intelligence (or, if delegated by the Director of National Intelligence, the Principal Deputy Director of National Intelligence) may, with respect to the Intelligence Community, after consultation with the head of the originating Intelligence Community element or department, declassify, downgrade, or direct the declassification or downgrading of information or intelligence relating to intelligence sources, methods, or activities.
(d) It is presumed that information that continues to meet the classification requirements under this order requires continued protection. In some exceptional cases, however, the need to protect such information may be outweighed by the public interest in disclosure of the information, and in these cases the information should be declassified. When such questions arise, they shall be referred to the agency head or the senior agency official. That official will determine, as an exercise of discretion, whether the public interest in disclosure outweighs the damage to the national security that might reasonably be expected from disclosure. This provision does not:
(1) amplify or modify the substantive criteria or procedures for classification; or
(2) create any substantive or procedural rights subject to judicial review.
(e) If the Director of the Information Security Oversight Office determines that information is classified in violation of this order, the Director may require the information to be declassified by the agency that originated the classification. Any such decision by the Director may be appealed to the President through the National Security Advisor. The information shall remain classified pending a prompt decision on the appeal.
(f) The provisions of this section shall also apply to agencies that, under the terms of this order, do not have original classification authority, but had such authority under predecessor orders.
(g) No information may be excluded from declassification under section 3.3 of this order based solely on the type of document or record in which it is found. Rather, the classified information must be considered on the basis of its content.
(h) Classified nonrecord materials, including artifacts, shall be declassified as soon as they no longer meet the standards for classification under this order.
(i) When making decisions under sections 3.3, 3.4, and 3.5 of this order, agencies shall consider the final decisions of the Panel.