-74.5% is the change from 800 to 204
Calculation steps:
[( 204 - 800 ) ÷ 800] x 100 = -74.5%
Formula
Percentage change = [(204 - 800) / 800] x 100
Subtract the new number by the original number
204 - 800 = -596
-596 ÷ 800 = -0.745
-0.745 x 100 = -74.5%