24.22% is the change from 256 to 318
Calculation steps:
[( 318 - 256 ) ÷ 256] x 100 = 24.22%
Formula
Percentage change = [(318 - 256) / 256] x 100
Subtract the new number by the original number
318 - 256 = 62
62 ÷ 256 = 0.2421875
0.2421875 x 100 = 24.22%