253.13% is the change from 256 to 904
Calculation steps:
[( 904 - 256 ) ÷ 256] x 100 = 253.13%
Formula
Percentage change = [(904 - 256) / 256] x 100
Subtract the new number by the original number
904 - 256 = 648
648 ÷ 256 = 2.53125
2.53125 x 100 = 253.13%