-69.97% is the change from 686 to 206
Calculation steps:
[( 206 - 686 ) ÷ 686] x 100 = -69.97%
Formula
Percentage change = [(206 - 686) / 686] x 100
Subtract the new number by the original number
206 - 686 = -480
-480 ÷ 686 = -0.6997084548104956
-0.6997084548104956 x 100 = -69.97%