3.07% is the change from 814 to 839
Calculation steps:
[( 839 - 814 ) ÷ 814] x 100 = 3.07%
Formula
Percentage change = [(839 - 814) / 814] x 100
Subtract the new number by the original number
839 - 814 = 25
25 ÷ 814 = 0.030712530712530713
0.030712530712530713 x 100 = 3.07%