36.33% is the change from 256 to 349
Calculation steps:
[( 349 - 256 ) ÷ 256] x 100 = 36.33%
Formula
Percentage change = [(349 - 256) / 256] x 100
Subtract the new number by the original number
349 - 256 = 93
93 ÷ 256 = 0.36328125
0.36328125 x 100 = 36.33%