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CIA World Factbook

Christian 31.4% 

Muslim 23.2%

Hindu 15%

Buddhist 7.1% 

folk religions 5.9% 

Jewish 0.2% 

other 0.8% 

unaffiliated 16.4

adherents.com

Christian 33%

Muslim 21%

Hindu 14%

Buddhist 6%

Chinese Traditional 6%

Primal-Indigenous 6%

Judaism 0.22%

Sikhism 0.36%

Nonreligious 16%

These are pretty much similar but the numbers of the main religions are just a couple percentages off and the added religions by adherents.com have specific percentages rather than the CIA World Factbook.