-14.29% is the change from 140 to 120
Calculation steps:
[( 120 - 140 ) ÷ 140] x 100 = -14.29%
Formula
Percentage change = [(120 - 140) / 140] x 100
Subtract the new number by the original number
120 - 140 = -20
-20 ÷ 140 = -0.14285714285714285
-0.14285714285714285 x 100 = -14.29%