-43.39% is the change from 454 to 257
Calculation steps:
[( 257 - 454 ) ÷ 454] x 100 = -43.39%
Formula
Percentage change = [(257 - 454) / 454] x 100
Subtract the new number by the original number
257 - 454 = -197
-197 ÷ 454 = -0.43392070484581496
-0.43392070484581496 x 100 = -43.39%