198.83% is the change from 256 to 765
Calculation steps:
[( 765 - 256 ) ÷ 256] x 100 = 198.83%
Formula
Percentage change = [(765 - 256) / 256] x 100
Subtract the new number by the original number
765 - 256 = 509
509 ÷ 256 = 1.98828125
1.98828125 x 100 = 198.83%