How did the marketcap drop by nearly 90% if the price dropped only (LOL) ~75%? Did some tokens disappear somewhere?
I believe CMC only considers the non-staked coins for their circulating supply. That's also why they don't consider the coin eligible for "normal ranking", as complained by a shiller
here when the it was "top 17" (it's now top 206).
Here is an archive from last month, where it shows a supply of 378 billions:
https://web.archive.org/web/20201022161033/https://coinmarketcap.com/pt-br/currencies/hexNow there is only 175 billions.