People who bought the coins at the high value are already loosing in the market, so instead of panic about the current situation, it is very good to hold the coin until the market starts recovering. Even i have lost value in the market but there is no choice for us, we have to wait until the market starts recovering.
Those that bought bitcoin when it was very expensive were not professional traders they were normal people that wanted to get some profits thanks to bitcoin and now their dreams are shattered and they will never recover the money they invested in the market since they sold their coins already, you must get this only those that believe completely in bitcoin or those that have a good knowledge about how the market works are holding now, everyone else already got out of the market.
This is easy to know since a huge amount of money has disappeared from the markets and even when the market recovers during the next years all of those that lost a huge amount of money will probably never comeback.