2.09% is the change from 814 to 831
Calculation steps:
[( 831 - 814 ) ÷ 814] x 100 = 2.09%
Formula
Percentage change = [(831 - 814) / 814] x 100
Subtract the new number by the original number
831 - 814 = 17
17 ÷ 814 = 0.020884520884520884
0.020884520884520884 x 100 = 2.09%