Largest Mortgage Rate Swings in History  In 18 months, the year-over-year percentage change in rates went from -27.8 percent to positive 80.4 percent, a swing of 108.2 percentage points. The December 2020 decline of 27.8 percent is the largest decline in history. The June 2022 year-over-year rise of 80.4% is the largest rise in history. … Continue reading The Current Rise in Mortgage Rates Is Unlike Anything in History