Let's find reason in the previous fall of Bitcoin from 53K: AS you saw BTC started to dump from 53K and the chart is the same like here let's have better look:
and most of the time it is happening in forex Or Crypto Or ... take look at the GBPUSD example that price started to fall from 30Jul:
It is the simple but useful Fibonacci level that I usually enjoy using it comment below and send your example with a chart about Fiboanci's retracement levels.