15.93% is the change from 810 to 939
Calculation steps:
[( 939 - 810 ) ÷ 810] x 100 = 15.93%
Formula
Percentage change = [(939 - 810) / 810] x 100
Subtract the new number by the original number
939 - 810 = 129
129 ÷ 810 = 0.15925925925925927
0.15925925925925927 x 100 = 15.93%