71.88% is the change from 256 to 440
Calculation steps:
[( 440 - 256 ) ÷ 256] x 100 = 71.88%
Formula
Percentage change = [(440 - 256) / 256] x 100
Subtract the new number by the original number
440 - 256 = 184
184 ÷ 256 = 0.71875
0.71875 x 100 = 71.88%