-76.31% is the change from 819 to 194
Calculation steps:
[( 194 - 819 ) ÷ 819] x 100 = -76.31%
Formula
Percentage change = [(194 - 819) / 819] x 100
Subtract the new number by the original number
194 - 819 = -625
-625 ÷ 819 = -0.7631257631257631
-0.7631257631257631 x 100 = -76.31%