-46.35% is the change from 479 to 257
Calculation steps:
[( 257 - 479 ) ÷ 479] x 100 = -46.35%
Formula
Percentage change = [(257 - 479) / 479] x 100
Subtract the new number by the original number
257 - 479 = -222
-222 ÷ 479 = -0.46346555323590816
-0.46346555323590816 x 100 = -46.35%