-86.27% is the change from 153 to 21
Calculation steps:
[( 21 - 153 ) ÷ 153] x 100 = -86.27%
Formula
Percentage change = [(21 - 153) / 153] x 100
Subtract the new number by the original number
21 - 153 = -132
-132 ÷ 153 = -0.8627450980392157
-0.8627450980392157 x 100 = -86.27%