18.75% is the change from 256 to 304
Calculation steps:
[( 304 - 256 ) ÷ 256] x 100 = 18.75%
Formula
Percentage change = [(304 - 256) / 256] x 100
Subtract the new number by the original number
304 - 256 = 48
48 ÷ 256 = 0.1875
0.1875 x 100 = 18.75%
Example