-19.6% is the change from 1000 to 804
Calculation steps:
[( 804 - 1000 ) ÷ 1000] x 100 = -19.6%
Formula
Percentage change = [(804 - 1000) / 1000] x 100
Subtract the new number by the original number
804 - 1000 = -196
-196 ÷ 1000 = -0.196
-0.196 x 100 = -19.6%