-48.15% is the change from 135 to 70
Calculation steps:
[( 70 - 135 ) ÷ 135] x 100 = -48.15%
Formula
Percentage change = [(70 - 135) / 135] x 100
Subtract the new number by the original number
70 - 135 = -65
-65 ÷ 135 = -0.48148148148148145
-0.48148148148148145 x 100 = -48.15%