2.7% is the change from 667 to 685
Calculation steps:
[( 685 - 667 ) ÷ 667] x 100 = 2.7%
Formula
Percentage change = [(685 - 667) / 667] x 100
Subtract the new number by the original number
685 - 667 = 18
18 ÷ 667 = 0.026986506746626688
0.026986506746626688 x 100 = 2.7%