-97.07% is the change from 819 to 24
Calculation steps:
[( 24 - 819 ) ÷ 819] x 100 = -97.07%
Formula
Percentage change = [(24 - 819) / 819] x 100
Subtract the new number by the original number
24 - 819 = -795
-795 ÷ 819 = -0.9706959706959707
-0.9706959706959707 x 100 = -97.07%