-79.93% is the change from 847 to 170
Calculation steps:
[( 170 - 847 ) ÷ 847] x 100 = -79.93%
Formula
Percentage change = [(170 - 847) / 847] x 100
Subtract the new number by the original number
170 - 847 = -677
-677 ÷ 847 = -0.7992916174734357
-0.7992916174734357 x 100 = -79.93%