-79.59% is the change from 686 to 140
Calculation steps:
[( 140 - 686 ) ÷ 686] x 100 = -79.59%
Formula
Percentage change = [(140 - 686) / 686] x 100
Subtract the new number by the original number
140 - 686 = -546
-546 ÷ 686 = -0.7959183673469388
-0.7959183673469388 x 100 = -79.59%