abu_doubleu:
There are many maps on Christian percentages out on the internet, but the majority are not sourced and usually a bit outdated. Many also have very strange and arbitrary scales, like the one on Wikipedia that has 0-7%, 30-50%, and 90-100%.
This one tries to use the most recent sources. This isn’t always easy, because even recent estimates for countries like Russia range from 42-77%. But usually, there’s an official source somewhere in there (a national housing survey done in 2012, in Russia’s case)!
(Source: reddit.com)