-21.72% is the change from 686 to 537
Calculation steps:
[( 537 - 686 ) ÷ 686] x 100 = -21.72%
Formula
Percentage change = [(537 - 686) / 686] x 100
Subtract the new number by the original number
537 - 686 = -149
-149 ÷ 686 = -0.21720116618075802
-0.21720116618075802 x 100 = -21.72%