-2% is the change from 700 to 686
Calculation steps:
[( 686 - 700 ) ÷ 700] x 100 = -2%
Formula
Percentage change = [(686 - 700) / 700] x 100
Subtract the new number by the original number
686 - 700 = -14
-14 ÷ 700 = -0.02
-0.02 x 100 = -2%
Example