-52.28% is the change from 285 to 136
Calculation steps:
[( 136 - 285 ) ÷ 285] x 100 = -52.28%
Formula
Percentage change = [(136 - 285) / 285] x 100
Subtract the new number by the original number
136 - 285 = -149
-149 ÷ 285 = -0.5228070175438596
-0.5228070175438596 x 100 = -52.28%