289.06% is the change from 256 to 996
Calculation steps:
[( 996 - 256 ) ÷ 256] x 100 = 289.06%
Formula
Percentage change = [(996 - 256) / 256] x 100
Subtract the new number by the original number
996 - 256 = 740
740 ÷ 256 = 2.890625
2.890625 x 100 = 289.06%