-76.25% is the change from 800 to 190
Calculation steps:
[( 190 - 800 ) ÷ 800] x 100 = -76.25%
Formula
Percentage change = [(190 - 800) / 800] x 100
Subtract the new number by the original number
190 - 800 = -610
-610 ÷ 800 = -0.7625
-0.7625 x 100 = -76.25%