177.73% is the change from 256 to 711
Calculation steps:
[( 711 - 256 ) ÷ 256] x 100 = 177.73%
Formula
Percentage change = [(711 - 256) / 256] x 100
Subtract the new number by the original number
711 - 256 = 455
455 ÷ 256 = 1.77734375
1.77734375 x 100 = 177.73%