-47.79% is the change from 136 to 71
Calculation steps:
[( 71 - 136 ) ÷ 136] x 100 = -47.79%
Formula
Percentage change = [(71 - 136) / 136] x 100
Subtract the new number by the original number
71 - 136 = -65
-65 ÷ 136 = -0.47794117647058826
-0.47794117647058826 x 100 = -47.79%