When the price of bitcoin falls, the price of all altcoins will fall. This is normal. It also needs to see whether the price of bitcoin will continue to fall.
Some times and most of the time when value of bitcoin is falling down the value of altcoin is increasing vise versa and that is happening in a past 2 days, but i advise to hold your bitcoin dont do panic selling you will missed the opportunity to earn profit and when your altcoin generates profit much better to sell it and wait for the duno of value again.