303.4% is the change from 206 to 831
Calculation steps:
[( 831 - 206 ) ÷ 206] x 100 = 303.4%
Formula
Percentage change = [(831 - 206) / 206] x 100
Subtract the new number by the original number
831 - 206 = 625
625 ÷ 206 = 3.033980582524272
3.033980582524272 x 100 = 303.4%