-13.57% is the change from 140 to 121
Calculation steps:
[( 121 - 140 ) ÷ 140] x 100 = -13.57%
Formula
Percentage change = [(121 - 140) / 140] x 100
Subtract the new number by the original number
121 - 140 = -19
-19 ÷ 140 = -0.1357142857142857
-0.1357142857142857 x 100 = -13.57%