-84.13% is the change from 819 to 130
Calculation steps:
[( 130 - 819 ) ÷ 819] x 100 = -84.13%
Formula
Percentage change = [(130 - 819) / 819] x 100
Subtract the new number by the original number
130 - 819 = -689
-689 ÷ 819 = -0.8412698412698413
-0.8412698412698413 x 100 = -84.13%