76.56% is the change from 256 to 452
Calculation steps:
[( 452 - 256 ) ÷ 256] x 100 = 76.56%
Formula
Percentage change = [(452 - 256) / 256] x 100
Subtract the new number by the original number
452 - 256 = 196
196 ÷ 256 = 0.765625
0.765625 x 100 = 76.56%