24.61% is the change from 256 to 319
Calculation steps:
[( 319 - 256 ) ÷ 256] x 100 = 24.61%
Formula
Percentage change = [(319 - 256) / 256] x 100
Subtract the new number by the original number
319 - 256 = 63
63 ÷ 256 = 0.24609375
0.24609375 x 100 = 24.61%