225% is the change from 256 to 832
Calculation steps:
[( 832 - 256 ) ÷ 256] x 100 = 225%
Formula
Percentage change = [(832 - 256) / 256] x 100
Subtract the new number by the original number
832 - 256 = 576
576 ÷ 256 = 2.25
2.25 x 100 = 225%
Example