A big panic from people 
That may happen to them, especially for small and medium investors who already bought bitcoin at a high price and in the market, there will be a panic sell from them.
But the big investor will be happy to buy bitcoin at that price because the price is lower and they might not see that in the next year.
But after the price reaches the lowest price, sooner or later, the price will bounce and start the rally.
Investors who always anticipate that bitcoin price will continue to move up, surely they will start to panic and think that their investments will be over. But for those wise investors who take advantage when there is a big crash, i guess they will never stop on buying bitcoin unless its value surges again. The fact that bitcoin will always recover and increase its value, then there's no reason not to buy when bitcoin is in dip.That may happen to them, especially for small and medium investors who already bought bitcoin at a high price and in the market, there will be a panic sell from them.
But the big investor will be happy to buy bitcoin at that price because the price is lower and they might not see that in the next year.
But after the price reaches the lowest price, sooner or later, the price will bounce and start the rally.