-50.55% is the change from 455 to 225
Calculation steps:
[( 225 - 455 ) ÷ 455] x 100 = -50.55%
Formula
Percentage change = [(225 - 455) / 455] x 100
Subtract the new number by the original number
225 - 455 = -230
-230 ÷ 455 = -0.5054945054945055
-0.5054945054945055 x 100 = -50.55%