263.28% is the change from 256 to 930
Calculation steps:
[( 930 - 256 ) ÷ 256] x 100 = 263.28%
Formula
Percentage change = [(930 - 256) / 256] x 100
Subtract the new number by the original number
930 - 256 = 674
674 ÷ 256 = 2.6328125
2.6328125 x 100 = 263.28%