-70.33% is the change from 455 to 135
Calculation steps:
[( 135 - 455 ) ÷ 455] x 100 = -70.33%
Formula
Percentage change = [(135 - 455) / 455] x 100
Subtract the new number by the original number
135 - 455 = -320
-320 ÷ 455 = -0.7032967032967034
-0.7032967032967034 x 100 = -70.33%