-52.21% is the change from 136 to 65
Calculation steps:
[( 65 - 136 ) ÷ 136] x 100 = -52.21%
Formula
Percentage change = [(65 - 136) / 136] x 100
Subtract the new number by the original number
65 - 136 = -71
-71 ÷ 136 = -0.5220588235294118
-0.5220588235294118 x 100 = -52.21%