268.36% is the change from 256 to 943
Calculation steps:
[( 943 - 256 ) ÷ 256] x 100 = 268.36%
Formula
Percentage change = [(943 - 256) / 256] x 100
Subtract the new number by the original number
943 - 256 = 687
687 ÷ 256 = 2.68359375
2.68359375 x 100 = 268.36%