67.58% is the change from 256 to 429
Calculation steps:
[( 429 - 256 ) ÷ 256] x 100 = 67.58%
Formula
Percentage change = [(429 - 256) / 256] x 100
Subtract the new number by the original number
429 - 256 = 173
173 ÷ 256 = 0.67578125
0.67578125 x 100 = 67.58%