-18.51% is the change from 686 to 559
Calculation steps:
[( 559 - 686 ) ÷ 686] x 100 = -18.51%
Formula
Percentage change = [(559 - 686) / 686] x 100
Subtract the new number by the original number
559 - 686 = -127
-127 ÷ 686 = -0.18513119533527697
-0.18513119533527697 x 100 = -18.51%