-64.4% is the change from 809 to 288
Calculation steps:
[( 288 - 809 ) ÷ 809] x 100 = -64.4%
Formula
Percentage change = [(288 - 809) / 809] x 100
Subtract the new number by the original number
288 - 809 = -521
-521 ÷ 809 = -0.6440049443757726
-0.6440049443757726 x 100 = -64.4%