That level of price decrease is completely normal; if you're a true investor, you must have patience and wait 
That's right, because with the current market conditions, a price decrease of more than 70% is still normal, unless there is a bull run, but altcoin that you invest does not increase and instead dump, then you don't need to expect much from altcoin that you invest, but I see altcoin that OP invested is very good, so I'm sure the price will definitely increase again and give OP a lot of profit.