28.04% is the change from 649 to 831
Calculation steps:
[( 831 - 649 ) ÷ 649] x 100 = 28.04%
Formula
Percentage change = [(831 - 649) / 649] x 100
Subtract the new number by the original number
831 - 649 = 182
182 ÷ 649 = 0.28043143297380585
0.28043143297380585 x 100 = 28.04%