251.95% is the change from 256 to 901
Calculation steps:
[( 901 - 256 ) ÷ 256] x 100 = 251.95%
Formula
Percentage change = [(901 - 256) / 256] x 100
Subtract the new number by the original number
901 - 256 = 645
645 ÷ 256 = 2.51953125
2.51953125 x 100 = 251.95%