246.88% is the change from 256 to 888
Calculation steps:
[( 888 - 256 ) ÷ 256] x 100 = 246.88%
Formula
Percentage change = [(888 - 256) / 256] x 100
Subtract the new number by the original number
888 - 256 = 632
632 ÷ 256 = 2.46875
2.46875 x 100 = 246.88%