-79.22% is the change from 818 to 170
Calculation steps:
[( 170 - 818 ) ÷ 818] x 100 = -79.22%
Formula
Percentage change = [(170 - 818) / 818] x 100
Subtract the new number by the original number
170 - 818 = -648
-648 ÷ 818 = -0.7921760391198044
-0.7921760391198044 x 100 = -79.22%