My own opinion to this I will say this is not unusual for cryptocurrency. The price goes up and down for pass history Bitcoin price fall and raise dropping at 50% . However It's important to know that the long term outlook for Bitcoin is still positive, with many prediction it will continue to increase in Time.
I dont really understand what you mean by it's not unsual for crypto currency. If what you mean was that it's unusual for crypto currency to fall below or within %50 I think you are getting it all wring. Crypto currency expecialy Bitcoin is not stable and that is what makes it unique from normal fiat currency. It's volatility makes it profitable on investing. I think if not it's volatility I don't think if people would be able to invest in it. The primary aim why people gain from Bitcoin is the price changes. Just like Michael J Saylor CEO of MicroStrategy, who invested on bitcoin on the 8/8/2020 with the sum of $250m at the rate of $11653k per btc. on the 14/9/2020 he also baugh Bitcoin worth $175m at the rates of $10419k per btc. he fother baugh Bitcoin worth of $50m on the 5/12/2020 at a total sum of $475m at the rate of $19427k per btc and a total of about 40,824btc today he is Worth $1,134,639,838.34b. if not for Bitcoin volatility how on Earth would he have made this huge sum of money I will show you the spreadsheet
Link source==>
https://www.businesswire.com/news/home/20200811005331/en/MicroStrategy-Adopts-Bitcoin-Primary-Treasury-Reserve-Asset