69.92% is the change from 256 to 435
Calculation steps:
[( 435 - 256 ) ÷ 256] x 100 = 69.92%
Formula
Percentage change = [(435 - 256) / 256] x 100
Subtract the new number by the original number
435 - 256 = 179
179 ÷ 256 = 0.69921875
0.69921875 x 100 = 69.92%