-64.3% is the change from 804 to 287
Calculation steps:
[( 287 - 804 ) ÷ 804] x 100 = -64.3%
Formula
Percentage change = [(287 - 804) / 804] x 100
Subtract the new number by the original number
287 - 804 = -517
-517 ÷ 804 = -0.6430348258706468
-0.6430348258706468 x 100 = -64.3%