Explanation

Islam is the second-largest religion in the World

List of World's largest Religions.

1.    Christianity (31.2%)

2.    Islam (24.1%)

3.    No religion (16%)

4.    Hinduism (15.1%)

5.    Buddhism (6.9%)

6.    Folk religions (5.7%)

7.    Other religions (0.5%)

8.    Sikhism (0.3%)

9.     Judaism (0.2%)