39.84% is the change from 256 to 358
Calculation steps:
[( 358 - 256 ) ÷ 256] x 100 = 39.84%
Formula
Percentage change = [(358 - 256) / 256] x 100
Subtract the new number by the original number
358 - 256 = 102
102 ÷ 256 = 0.3984375
0.3984375 x 100 = 39.84%