-6.81% is the change from 455 to 424
Calculation steps:
[( 424 - 455 ) ÷ 455] x 100 = -6.81%
Formula
Percentage change = [(424 - 455) / 455] x 100
Subtract the new number by the original number
424 - 455 = -31
-31 ÷ 455 = -0.06813186813186813
-0.06813186813186813 x 100 = -6.81%