While ranking the five religions of the worded according to the CIA WorldFacbook they are the following: Christian 31.4%, Muslim 23.2%, Hindu 15%, Buddhist 7.1%, Jewish 0.2. according to the website adherents.com the five religion are ranked like this: Christian is 33%, Islam is 21%, Hindu is 14%, Buddhism is 6%, and Judaism is .22%. So there's a bid difference between the 2 websites considering a single percent is millions of people. The second website had 1.6% percent in difference and also had a 2.2% difference in Islam(Muslim) the first website having the larger amount.