Adults identifying themselves as "religious nones" have increased over the last few decades, and a recent Pew survey explored why they chose to move away from religion.
About 78 percent of the respondents of the survey said that they grew up in religious environment, but departed from the religion.
http://www.christianitydaily.com/articles/8428/20160826/new-study-explores-why-religious-nones-departed-childhood-religion.htm
About 78 percent of the respondents of the survey said that they grew up in religious environment, but departed from the religion.
http://www.christianitydaily.com/articles/8428/20160826/new-study-explores-why-religious-nones-departed-childhood-religion.htm