-47.41% is the change from 135 to 71
Calculation steps:
[( 71 - 135 ) ÷ 135] x 100 = -47.41%
Formula
Percentage change = [(71 - 135) / 135] x 100
Subtract the new number by the original number
71 - 135 = -64
-64 ÷ 135 = -0.4740740740740741
-0.4740740740740741 x 100 = -47.41%