-85.21% is the change from 142 to 21
Calculation steps:
[( 21 - 142 ) ÷ 142] x 100 = -85.21%
Formula
Percentage change = [(21 - 142) / 142] x 100
Subtract the new number by the original number
21 - 142 = -121
-121 ÷ 142 = -0.852112676056338
-0.852112676056338 x 100 = -85.21%