209.73% is the change from 257 to 796
Calculation steps:
[( 796 - 257 ) ÷ 257] x 100 = 209.73%
Formula
Percentage change = [(796 - 257) / 257] x 100
Subtract the new number by the original number
796 - 257 = 539
539 ÷ 257 = 2.09727626459144
2.09727626459144 x 100 = 209.73%