38.28% is the change from 256 to 354
Calculation steps:
[( 354 - 256 ) ÷ 256] x 100 = 38.28%
Formula
Percentage change = [(354 - 256) / 256] x 100
Subtract the new number by the original number
354 - 256 = 98
98 ÷ 256 = 0.3828125
0.3828125 x 100 = 38.28%