13.67% is the change from 256 to 291
Calculation steps:
[( 291 - 256 ) ÷ 256] x 100 = 13.67%
Formula
Percentage change = [(291 - 256) / 256] x 100
Subtract the new number by the original number
291 - 256 = 35
35 ÷ 256 = 0.13671875
0.13671875 x 100 = 13.67%