204.69% is the change from 256 to 780
Calculation steps:
[( 780 - 256 ) ÷ 256] x 100 = 204.69%
Formula
Percentage change = [(780 - 256) / 256] x 100
Subtract the new number by the original number
780 - 256 = 524
524 ÷ 256 = 2.046875
2.046875 x 100 = 204.69%