depending on the condition of the coin condition, whether the decline is not developing, or the decline is stable and again rises again. that you can see and you value how the coin survived. I think that the standard of panic sell is when eth price down. it's very sad, because we certainly sell altcoin coins to eth or bitcoin. if altcoin is stable, then what we have to see is the price of eth or bitcoin. my advice you do not panic first. make this your investment for the future. think positively that the coin you are investing in, will be a great advantage in the future.