12.39% is the change from 686 to 771
Calculation steps:
[( 771 - 686 ) ÷ 686] x 100 = 12.39%
Formula
Percentage change = [(771 - 686) / 686] x 100
Subtract the new number by the original number
771 - 686 = 85
85 ÷ 686 = 0.1239067055393586
0.1239067055393586 x 100 = 12.39%