156.25% is the change from 256 to 656
Calculation steps:
[( 656 - 256 ) ÷ 256] x 100 = 156.25%
Formula
Percentage change = [(656 - 256) / 256] x 100
Subtract the new number by the original number
656 - 256 = 400
400 ÷ 256 = 1.5625
1.5625 x 100 = 156.25%