22.27% is the change from 256 to 313
Calculation steps:
[( 313 - 256 ) ÷ 256] x 100 = 22.27%
Formula
Percentage change = [(313 - 256) / 256] x 100
Subtract the new number by the original number
313 - 256 = 57
57 ÷ 256 = 0.22265625
0.22265625 x 100 = 22.27%