-88.64% is the change from 819 to 93
Calculation steps:
[( 93 - 819 ) ÷ 819] x 100 = -88.64%
Formula
Percentage change = [(93 - 819) / 819] x 100
Subtract the new number by the original number
93 - 819 = -726
-726 ÷ 819 = -0.8864468864468864
-0.8864468864468864 x 100 = -88.64%