This sounds fine - but - I HAVE seen coins lose more than 100% of their value - when they get delisted by exchanges, they effectively become worthless.
Additionally, there are plenty of ways a coin can drop in value by more than 99% , but never drop by 100% (buying into the idea, for a moment, that it is impossible for a coin to drop by 100% of its value).
For example, it could drop by 99.1% in value. Or 99.9% in value. Or 99.9999% in value. I hope you understand what I am getting at here?
lol It's common sense
if you see a coin that is popular and has had one or two good volume pumps in the past, like cloak for instance
and that coin has lost 90% or more of its value and is being accumulated, then that coin is getting ready for the pump
so it is literally impossible to see a coin lose more than 100% in value which lets the bottom become more visible and easy to buy
coins don't just get delisted out of the blue there has to be several days of looow / no volume, so common sense would lead you into avoiding coins like this
where there isn't a lack of volume, there is either accumulation or distribution that is the "rhythm" that you were referring to there