-40.97% is the change from 432 to 255
Calculation steps:
[( 255 - 432 ) ÷ 432] x 100 = -40.97%
Formula
Percentage change = [(255 - 432) / 432] x 100
Subtract the new number by the original number
255 - 432 = -177
-177 ÷ 432 = -0.4097222222222222
-0.4097222222222222 x 100 = -40.97%