-27.7% is the change from 686 to 496
Calculation steps:
[( 496 - 686 ) ÷ 686] x 100 = -27.7%
Formula
Percentage change = [(496 - 686) / 686] x 100
Subtract the new number by the original number
496 - 686 = -190
-190 ÷ 686 = -0.27696793002915454
-0.27696793002915454 x 100 = -27.7%