-5.49% is the change from 455 to 430
Calculation steps:
[( 430 - 455 ) ÷ 455] x 100 = -5.49%
Formula
Percentage change = [(430 - 455) / 455] x 100
Subtract the new number by the original number
430 - 455 = -25
-25 ÷ 455 = -0.054945054945054944
-0.054945054945054944 x 100 = -5.49%