267.19% is the change from 256 to 940
Calculation steps:
[( 940 - 256 ) ÷ 256] x 100 = 267.19%
Formula
Percentage change = [(940 - 256) / 256] x 100
Subtract the new number by the original number
940 - 256 = 684
684 ÷ 256 = 2.671875
2.671875 x 100 = 267.19%