To use relevant examples, the Argentine peso increased 2018% against the U.S. dollar between December 31, 2010, and December 31, 2020. In Turkey, the increase was 382% and, in Russia, 143% over the same period. (Source: www.xe.com)
The Digital Dollar can protect from devaluation mainly in countries where the local currency is not stable, because USDC generally tracks the value of the USDC. (Source: https://www.coindesk.com/price/usd-coin/).