-81.15% is the change from 902 to 170
Calculation steps:
[( 170 - 902 ) ÷ 902] x 100 = -81.15%
Formula
Percentage change = [(170 - 902) / 902] x 100
Subtract the new number by the original number
170 - 902 = -732
-732 ÷ 902 = -0.811529933481153
-0.811529933481153 x 100 = -81.15%