-3.31% is the change from 121 to 117
Calculation steps:
[( 117 - 121 ) ÷ 121] x 100 = -3.31%
Formula
Percentage change = [(117 - 121) / 121] x 100
Subtract the new number by the original number
117 - 121 = -4
-4 ÷ 121 = -0.03305785123966942
-0.03305785123966942 x 100 = -3.31%