-75.22% is the change from 686 to 170
Calculation steps:
[( 170 - 686 ) ÷ 686] x 100 = -75.22%
Formula
Percentage change = [(170 - 686) / 686] x 100
Subtract the new number by the original number
170 - 686 = -516
-516 ÷ 686 = -0.7521865889212828
-0.7521865889212828 x 100 = -75.22%