-76.53% is the change from 686 to 161
Calculation steps:
[( 161 - 686 ) ÷ 686] x 100 = -76.53%
Formula
Percentage change = [(161 - 686) / 686] x 100
Subtract the new number by the original number
161 - 686 = -525
-525 ÷ 686 = -0.7653061224489796
-0.7653061224489796 x 100 = -76.53%