How are these percentages calculated?

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andreas999999

How are these percentages calculated?

The statistics show me that I am better than 99.8% of all chess players - but my question is:
Which chess players exactly are meant by this?
For example, the players who have been active in the last 90 days?
Or does it mean everyone, including those who haven't played for years???

Best wishes

justbefair

https://support.chess.com/en/articles/8572866-what-does-percentile-mean

It is a group who has played at least 20 games in that time control and has played at least once in the last 90 days.