37.5% is the change from 256 to 352
Calculation steps:
[( 352 - 256 ) ÷ 256] x 100 = 37.5%
Formula
Percentage change = [(352 - 256) / 256] x 100
Subtract the new number by the original number
352 - 256 = 96
96 ÷ 256 = 0.375
0.375 x 100 = 37.5%
Example