-97.51% is the change from 804 to 20
Calculation steps:
[( 20 - 804 ) ÷ 804] x 100 = -97.51%
Formula
Percentage change = [(20 - 804) / 804] x 100
Subtract the new number by the original number
20 - 804 = -784
-784 ÷ 804 = -0.9751243781094527
-0.9751243781094527 x 100 = -97.51%