-79.23% is the change from 809 to 168
Calculation steps:
[( 168 - 809 ) ÷ 809] x 100 = -79.23%
Formula
Percentage change = [(168 - 809) / 809] x 100
Subtract the new number by the original number
168 - 809 = -641
-641 ÷ 809 = -0.792336217552534
-0.792336217552534 x 100 = -79.23%