-96.46% is the change from 819 to 29
Calculation steps:
[( 29 - 819 ) ÷ 819] x 100 = -96.46%
Formula
Percentage change = [(29 - 819) / 819] x 100
Subtract the new number by the original number
29 - 819 = -790
-790 ÷ 819 = -0.9645909645909646
-0.9645909645909646 x 100 = -96.46%