-90.72% is the change from 819 to 76
Calculation steps:
[( 76 - 819 ) ÷ 819] x 100 = -90.72%
Formula
Percentage change = [(76 - 819) / 819] x 100
Subtract the new number by the original number
76 - 819 = -743
-743 ÷ 819 = -0.9072039072039072
-0.9072039072039072 x 100 = -90.72%