246.09% is the change from 256 to 886
Calculation steps:
[( 886 - 256 ) ÷ 256] x 100 = 246.09%
Formula
Percentage change = [(886 - 256) / 256] x 100
Subtract the new number by the original number
886 - 256 = 630
630 ÷ 256 = 2.4609375
2.4609375 x 100 = 246.09%