79.3% is the change from 256 to 459
Calculation steps:
[( 459 - 256 ) ÷ 256] x 100 = 79.3%
Formula
Percentage change = [(459 - 256) / 256] x 100
Subtract the new number by the original number
459 - 256 = 203
203 ÷ 256 = 0.79296875
0.79296875 x 100 = 79.3%