-93.2% is the change from 823 to 56
Calculation steps:
[( 56 - 823 ) ÷ 823] x 100 = -93.2%
Formula
Percentage change = [(56 - 823) / 823] x 100
Subtract the new number by the original number
56 - 823 = -767
-767 ÷ 823 = -0.9319562575941677
-0.9319562575941677 x 100 = -93.2%