74.61% is the change from 256 to 447
Calculation steps:
[( 447 - 256 ) ÷ 256] x 100 = 74.61%
Formula
Percentage change = [(447 - 256) / 256] x 100
Subtract the new number by the original number
447 - 256 = 191
191 ÷ 256 = 0.74609375
0.74609375 x 100 = 74.61%