"The sucre maintained a fairly stable exchange rate against the US dollar until 1983, when it was devalued to 42 per dollar and a crawling peg was adopted. Depreciation gained momentum and the free market rate was over 800 per dollar by 1990 and almost 3000 per in 1995.
The sucre lost 67% of its foreign exchange value during 1999, then in one week nosedived 17%, ending at 25,000/US$1 on January 7, 2000. On January 9, President Jamil Mahuad announced that the US dollar would be adopted as Ecuador's official currency. Protests led to his removal. Vice President Gustavo Noboa became president, only to confirm the government's commitment to dollarization.
On March 9, 2000, Noboa signed a law passed by Congress, replacing the sucre with the United States dollar at an official exchange rate of 25,000 sucres per US$1. Both currencies were to circulate, the dollar being used for all but the smallest transactions. Only coins would continue in the local currency."
https://en.m.wikipedia.org/wiki/Currency_of_Ecuador
"The sucre maintained a fairly stable exchange rate against the US dollar until 1983, when it was devalued to 42 per dollar and a crawling peg was adopted. Depreciation gained momentum and the free market rate was over 800 per dollar by 1990 and almost 3000 per in 1995.
The sucre lost 67% of its foreign exchange value during 1999, then in one week nosedived 17%, ending at 25,000/US$1 on January 7, 2000. On January 9, President Jamil Mahuad announced that the US dollar would be adopted as Ecuador's official currency. Protests led to his removal. Vice President Gustavo Noboa became president, only to confirm the government's commitment to dollarization.
On March 9, 2000, Noboa signed a law passed by Congress, replacing the sucre with the United States dollar at an official exchange rate of 25,000 sucres per US$1. Both currencies were to circulate, the dollar being used for all but the smallest transactions. Only coins would continue in the local currency."