-82.42% is the change from 819 to 144
Calculation steps:
[( 144 - 819 ) ÷ 819] x 100 = -82.42%
Formula
Percentage change = [(144 - 819) / 819] x 100
Subtract the new number by the original number
144 - 819 = -675
-675 ÷ 819 = -0.8241758241758241
-0.8241758241758241 x 100 = -82.42%