586.78% is the change from 121 to 831
Calculation steps:
[( 831 - 121 ) ÷ 121] x 100 = 586.78%
Formula
Percentage change = [(831 - 121) / 121] x 100
Subtract the new number by the original number
831 - 121 = 710
710 ÷ 121 = 5.867768595041323
5.867768595041323 x 100 = 586.78%