63.28% is the change from 256 to 418
Calculation steps:
[( 418 - 256 ) ÷ 256] x 100 = 63.28%
Formula
Percentage change = [(418 - 256) / 256] x 100
Subtract the new number by the original number
418 - 256 = 162
162 ÷ 256 = 0.6328125
0.6328125 x 100 = 63.28%