255.47% is the change from 256 to 910
Calculation steps:
[( 910 - 256 ) ÷ 256] x 100 = 255.47%
Formula
Percentage change = [(910 - 256) / 256] x 100
Subtract the new number by the original number
910 - 256 = 654
654 ÷ 256 = 2.5546875
2.5546875 x 100 = 255.47%