What happened all the sudden for this massive drop in price
It's funny that when the price goes up quite a bit, that people look at it from a point that it's nice, or okay, but when the price starts heading down, then there is all panic. Stop that.
Haven't expected correction will be this huge, hope price may not get again back to $650 level.
Why does this come as such a surprise for you? If the price can go up significantly in quite a short time, then the price can also move in the opposite direction significantly in a short time. With the current wave of panic sellers, it may in fact come very close to the $650 level that you for some reason don't hope to see. Is that the price where you bought your coins at?
For sure that will happen, when price goes up, a lot of people have interest to sell it and at the same time when the price goes down, a lot of people have interest to buy, that's simple and that's why I don't expect big ups/downs... Bitcoin don't will reach 800 this year.