-62.81% is the change from 121 to 45
Calculation steps:
[( 45 - 121 ) ÷ 121] x 100 = -62.81%
Formula
Percentage change = [(45 - 121) / 121] x 100
Subtract the new number by the original number
45 - 121 = -76
-76 ÷ 121 = -0.628099173553719
-0.628099173553719 x 100 = -62.81%