-33.88% is the change from 121 to 80
Calculation steps:
[( 80 - 121 ) ÷ 121] x 100 = -33.88%
Formula
Percentage change = [(80 - 121) / 121] x 100
Subtract the new number by the original number
80 - 121 = -41
-41 ÷ 121 = -0.33884297520661155
-0.33884297520661155 x 100 = -33.88%