-82.66% is the change from 819 to 142
Calculation steps:
[( 142 - 819 ) ÷ 819] x 100 = -82.66%
Formula
Percentage change = [(142 - 819) / 819] x 100
Subtract the new number by the original number
142 - 819 = -677
-677 ÷ 819 = -0.8266178266178266
-0.8266178266178266 x 100 = -82.66%