-54.81% is the change from 135 to 61
Calculation steps:
[( 61 - 135 ) ÷ 135] x 100 = -54.81%
Formula
Percentage change = [(61 - 135) / 135] x 100
Subtract the new number by the original number
61 - 135 = -74
-74 ÷ 135 = -0.5481481481481482
-0.5481481481481482 x 100 = -54.81%