260.94% is the change from 256 to 924
Calculation steps:
[( 924 - 256 ) ÷ 256] x 100 = 260.94%
Formula
Percentage change = [(924 - 256) / 256] x 100
Subtract the new number by the original number
924 - 256 = 668
668 ÷ 256 = 2.609375
2.609375 x 100 = 260.94%