-79.93% is the change from 852 to 171
Calculation steps:
[( 171 - 852 ) ÷ 852] x 100 = -79.93%
Formula
Percentage change = [(171 - 852) / 852] x 100
Subtract the new number by the original number
171 - 852 = -681
-681 ÷ 852 = -0.7992957746478874
-0.7992957746478874 x 100 = -79.93%