-43.46% is the change from 451 to 255
Calculation steps:
[( 255 - 451 ) ÷ 451] x 100 = -43.46%
Formula
Percentage change = [(255 - 451) / 451] x 100
Subtract the new number by the original number
255 - 451 = -196
-196 ÷ 451 = -0.43458980044345896
-0.43458980044345896 x 100 = -43.46%