Is it politically incorrect to announce that you’re an atheist? The term free thinker sounds nice in itself, but what does it imply of those with religious beliefs then?
Couldn’t find the number of believers in the world just yet, but you can see the ‘top 10 largest highly international religious bodies’ here. According to this page there are 1,100,000,000, i.e. 1.1 billion Roman Catholics in the world. That’s more than one sixth (16.7%) of the world population at 6.5 billion now.
China has about 1.2 billion residents.
That’s less than one billion; less than one sixth (16.7%) of the world population.