-46.56% is the change from 479 to 256
Calculation steps:
[( 256 - 479 ) ÷ 479] x 100 = -46.56%
Formula
Percentage change = [(256 - 479) / 479] x 100
Subtract the new number by the original number
256 - 479 = -223
-223 ÷ 479 = -0.46555323590814196
-0.46555323590814196 x 100 = -46.56%