-34.56% is the change from 136 to 89
Calculation steps:
[( 89 - 136 ) ÷ 136] x 100 = -34.56%
Formula
Percentage change = [(89 - 136) / 136] x 100
Subtract the new number by the original number
89 - 136 = -47
-47 ÷ 136 = -0.34558823529411764
-0.34558823529411764 x 100 = -34.56%