Not really sure how all these stable coins work but how did a stable coin that is supposed to be equal to one US Dollar go down in price? 
Yes, the price reduction is no longer relevant to the value of the USD. And that's the lowest price since USDC was launched, which is $ 0.877. It seems that before the price drop, there was an increase in the amount of trading volume. But the price that has become irrelevant to the USD has also happened to USDT with a value of $ 0.56, but this is an old occurrence, maybe the price is launching. But if the USDC drops suddenly at this time it certainly makes us worry. When USDC drops, the price of USDT increases.