2.97% is the change from 807 to 831
Calculation steps:
[( 831 - 807 ) ÷ 807] x 100 = 2.97%
Formula
Percentage change = [(831 - 807) / 807] x 100
Subtract the new number by the original number
831 - 807 = 24
24 ÷ 807 = 0.02973977695167286
0.02973977695167286 x 100 = 2.97%