-96.42% is the change from 809 to 29
Calculation steps:
[( 29 - 809 ) ÷ 809] x 100 = -96.42%
Formula
Percentage change = [(29 - 809) / 809] x 100
Subtract the new number by the original number
29 - 809 = -780
-780 ÷ 809 = -0.9641532756489494
-0.9641532756489494 x 100 = -96.42%