Market ATH was $825b. Currently, it is $365b so a drop of roughly 56%.

Here are the drops from various Chinese projects from their Jan/Feb ATH to current figures:
CPChain - down 56%
Achain - down 84%
IOT Chain - down 80% (using $4.85 not the telegram pump ATH)
Bottos - down 69%
Neo - down 59%
INT - down 85%
HPB - down 77%
Aelf - down 75%
Nuls - down 66%
Matrix - down 66%
WTC - down 58%

Better performers:
Elastos - down 50%

Does anyone have an explanation as to why the more prominent Chinese projects have dumped harder than the market average? Some of these coins are actually quite promising too.