Wait, are you implying that the entire world population is religious? There are 8 billion, not 7 billion people now.

In 2018, 84% of people were religious. I have no idea how they reconcile atheism in China either since like 75% of their population has none.

https://en.m.wikipedia.org/wiki/Irreligion_in_China

https://www.theguardian.com/news/2018/aug/27/religion-why-is-faith-growing-and-what-happens-next

https://en.m.wikipedia.org/wiki/List_of_religious_populations