261.72% is the change from 256 to 926
Calculation steps:
[( 926 - 256 ) ÷ 256] x 100 = 261.72%
Formula
Percentage change = [(926 - 256) / 256] x 100
Subtract the new number by the original number
926 - 256 = 670
670 ÷ 256 = 2.6171875
2.6171875 x 100 = 261.72%