126.95% is the change from 256 to 581
Calculation steps:
[( 581 - 256 ) ÷ 256] x 100 = 126.95%
Formula
Percentage change = [(581 - 256) / 256] x 100
Subtract the new number by the original number
581 - 256 = 325
325 ÷ 256 = 1.26953125
1.26953125 x 100 = 126.95%