-79.41% is the change from 136 to 28
Calculation steps:
[( 28 - 136 ) ÷ 136] x 100 = -79.41%
Formula
Percentage change = [(28 - 136) / 136] x 100
Subtract the new number by the original number
28 - 136 = -108
-108 ÷ 136 = -0.7941176470588235
-0.7941176470588235 x 100 = -79.41%