-63.99% is the change from 711 to 256
Calculation steps:
[( 256 - 711 ) ÷ 711] x 100 = -63.99%
Formula
Percentage change = [(256 - 711) / 711] x 100
Subtract the new number by the original number
256 - 711 = -455
-455 ÷ 711 = -0.639943741209564
-0.639943741209564 x 100 = -63.99%