Ah, fair enough. I thought that when you said that Pat hadn't provided any sources, it was sources for the "Why is atheism growing so fast in the US? each city has it's own atheist branch now with more being formed every week, it can't all be down to the noises made by the crazy far right Republicans." quote.
In any case, here are some sources for the claim that creationists drive people away from Christianity:
Creationists Drive Young People Out Of The Church[bless and do not curse]|[bless and do not curse]Karl Giberson, Ph.D
Creationism chases people out of church
https://au.answers.yahoo.com/question/index?qid=20080622162531AAZFLUl
The tragedy of creation evangelism « The GeoChristian
Yes, we are protesting a young-earth creationism conference. Heres why. | God of Evolution
The Absurd Newspeak of Woodmorappe's 'Creation Science'
Do you believe the ideas taught by Young Earth Creationists pulls some people away from their faith? | Debate.org
Creation Science Rebuttals, Answers in Genesis Daily Feature, Decontaminating the Church (Decontaminating Our Children)
My claim deals with the rate of change, not the overall percentage that are non-religious. The facts clearly state that non-religious people are increasing, as the sources I provided in my previous post illustrate.
In any case, the sources I posted show that there are 46 million people who answered none to the religion question in 2012.
SOURCE They also show that almost 20% are skeptical towards religion.
SOURCE Hardly what I'd call "insignificant."
On the other hand, my source indicates that only 65% of Americans claim that religion is important in their lives.
SOURCE Since this not only includes Christians, but also Jews, Muslims, Hindus, Buddhists and many other faiths, your claim that 77% of Americans are Christian seems to be incorrect.