-76.79% is the change from 823 to 191
Calculation steps:
[( 191 - 823 ) ÷ 823] x 100 = -76.79%
Formula
Percentage change = [(191 - 823) / 823] x 100
Subtract the new number by the original number
191 - 823 = -632
-632 ÷ 823 = -0.7679222357229648
-0.7679222357229648 x 100 = -76.79%