Real reason behind decreasing BTC and other crypto price.....

In past three days bitcoin price has reduced by 15%.
What may be the reasons and when price will rise back?????
I have collected some information about it. Please read it carefully...
1)Decrease in interest in BTC according to google from past 3 months since some large countries band the bitcoin.
2)On the 9th June , news articles were posted about "regulators from the US Commodity Futures Trading Commission (CFTC)" demanding trading data from several cryptocurrency exchanges, with the goal of investigating market manipulation but it result out to loss of cryptocurrency also exchange called CoinRail also getting hacked..

1. Another main reason is , big whale selling bitcoin to huobi exchange which creates loss in bitcoin.