Estimates for number of people that have ever lived on earth vary quite a bit, and setting limits is also hard as what counts as people is also up for debate (do gingers count and all that), but 110 billion is a reasonable guess.
0.01% of that is 1100000000, or if we do 0.01% of the 7 billion alive today that is 700000.
Once again I fell down the martial arts rabbit hole and am plumbing the murky depths of the internet's various martial arts and fighting crafts echo chambers.
If you're not actively involved and only get up to speed every few years or so, you can see the tide of public opinion flapping worse than my dong while I'm skipping naked down a hallway.