-48.28% is the change from 495 to 256
Calculation steps:
[( 256 - 495 ) ÷ 495] x 100 = -48.28%
Formula
Percentage change = [(256 - 495) / 495] x 100
Subtract the new number by the original number
256 - 495 = -239
-239 ÷ 495 = -0.48282828282828283
-0.48282828282828283 x 100 = -48.28%