-80.03% is the change from 686 to 137
Calculation steps:
[( 137 - 686 ) ÷ 686] x 100 = -80.03%
Formula
Percentage change = [(137 - 686) / 686] x 100
Subtract the new number by the original number
137 - 686 = -549
-549 ÷ 686 = -0.8002915451895044
-0.8002915451895044 x 100 = -80.03%