-74.81% is the change from 135 to 34
Calculation steps:
[( 34 - 135 ) ÷ 135] x 100 = -74.81%
Formula
Percentage change = [(34 - 135) / 135] x 100
Subtract the new number by the original number
34 - 135 = -101
-101 ÷ 135 = -0.7481481481481481
-0.7481481481481481 x 100 = -74.81%