90th percentile rapid

At the moment, 1325 rapid is 90th percentile.
You can discover this info (on a desktop web browser, not sure about mobile) by going to Connect -> Members and then clicking on "Advanced" next to the Search button on the right. From there, click on the dropdown that says "All Ratings" and choose "Rapid". Then put in a rating range under Min and Max, and click the Search button to find people in that rating range.
You can then pick a person and look at their rapid stats page to see the percentile associated with their rating. Then increase or decrease the rating range and repeat as necessary to hone in on the percentile that you're looking for. Google "binary search" if you want to know how to do this as efficiently as possible.
Here's a random person's rapid stats page that I found via the above process that demonstrates that 1325 = 90th percentile. (Of course, their rating and/or the percentile breakdown may be different tomorrow.)

so today, I reached 1700 rapid and the game previously when I was 1695 I had a 98.9 percentile and after I reached 1700 I got into the 99% percentile for rapid.

Depends on how long the game is. Anyone can reach 90%+ in a game with 15 moves or less, but in a game with 60+ moves, most people wouldn't even score 85%

this thread is active! btw this is about the percentile of the chess.com populace but not accuracy within a game.