-76.43% is the change from 819 to 193
Calculation steps:
[( 193 - 819 ) ÷ 819] x 100 = -76.43%
Formula
Percentage change = [(193 - 819) / 819] x 100
Subtract the new number by the original number
193 - 819 = -626
-626 ÷ 819 = -0.7643467643467643
-0.7643467643467643 x 100 = -76.43%