258.87% is the change from 231 to 829
Calculation steps:
[( 829 - 231 ) ÷ 231] x 100 = 258.87%
Formula
Percentage change = [(829 - 231) / 231] x 100
Subtract the new number by the original number
829 - 231 = 598
598 ÷ 231 = 2.588744588744589
2.588744588744589 x 100 = 258.87%