For every 100 adults raised Christian, 17.1 have left and 5.5 have joined; the unaffiliated have a net gain of 16.7
Source. Pew Research Center, 2025 report, pp. 22 and 40; surveys in 117 countries and territories, 2008–2024.
Method and data
Method. Pew reports that about one in 100 adults raised Muslim or Hindu has left and a similar number has joined each, and does not publish global rates for Jews or other religions because of small samples.
| Group | Left, per 100 raised in the group | Joined, per 100 raised in the group | Net, per 100 |
|---|---|---|---|
| Religiously unaffiliated | 7.5 | 24.2 | 16.7 |
| Christians | 17.1 | 5.5 | −11.6 |
| Buddhists | 22.1 | 12.3 | −9.8 |
