271.09% is the change from 256 to 950
Calculation steps:
[( 950 - 256 ) ÷ 256] x 100 = 271.09%
Formula
Percentage change = [(950 - 256) / 256] x 100
Subtract the new number by the original number
950 - 256 = 694
694 ÷ 256 = 2.7109375
2.7109375 x 100 = 271.09%