Assuming you invest 1,000 dollars.
First, the token drops 90%:
You lose 900 dollars → You have 100 dollars left.
Then, it increases by 90%:
90% of 100 dollars = 90 dollars profit → Now you
have 190 dollars.
Have you returned to break-even?
No. You are still down 81%.
(1,000 dollars → 190 dollars = -81%)
A 90% drop requires a 900%
growth to break even.