47.27% is the change from 256 to 377
Calculation steps:
[( 377 - 256 ) ÷ 256] x 100 = 47.27%
Formula
Percentage change = [(377 - 256) / 256] x 100
Subtract the new number by the original number
377 - 256 = 121
121 ÷ 256 = 0.47265625
0.47265625 x 100 = 47.27%