What percentage of the world's population is China?

What percentage of the world's population is China?

According to the population data of March 2010 of "world population clock", China's population is 1.336 billion, and the world's population is 6.901 billion. Based on this calculation, China's population accounts for about 19.36% of the world's population
At present, China's population is about 1.35 billion, and it will not exceed 1.37 billion by the end of this year. The world's population will exceed 7 billion in the middle and later period of this year, and now it is estimated that it will be about 6.94 billion