2.85% is the change from 667 to 686
Calculation steps:
[( 686 - 667 ) ÷ 667] x 100 = 2.85%
Formula
Percentage change = [(686 - 667) / 667] x 100
Subtract the new number by the original number
686 - 667 = 19
19 ÷ 667 = 0.02848575712143928
0.02848575712143928 x 100 = 2.85%