247.7% is the change from 239 to 831
Calculation steps:
[( 831 - 239 ) ÷ 239] x 100 = 247.7%
Formula
Percentage change = [(831 - 239) / 239] x 100
Subtract the new number by the original number
831 - 239 = 592
592 ÷ 239 = 2.4769874476987446
2.4769874476987446 x 100 = 247.7%