-76.56% is the change from 819 to 192
Calculation steps:
[( 192 - 819 ) ÷ 819] x 100 = -76.56%
Formula
Percentage change = [(192 - 819) / 819] x 100
Subtract the new number by the original number
192 - 819 = -627
-627 ÷ 819 = -0.7655677655677655
-0.7655677655677655 x 100 = -76.56%