315.5% is the change from 200 to 831
Calculation steps:
[( 831 - 200 ) ÷ 200] x 100 = 315.5%
Formula
Percentage change = [(831 - 200) / 200] x 100
Subtract the new number by the original number
831 - 200 = 631
631 ÷ 200 = 3.155
3.155 x 100 = 315.5%
Example