Mostly I loss newer alt coin on yobit the price is crazy can drop to 500% even more just one day but there are also have a few good coin that can triple your money in a week.
Do your own research and don't listen to trollbox can save you from scams
You must mean 80% drop. The biggest drop a coin can make is 100%, which would drop it down to zero.
Do you know sub and spm? Drop nearly 10000%,I loss to sub 1btc just in 30 minutes crazy bot pushed down to 100sat from 1300 satoshi