-99.88% is the change from 824 to 1
Calculation steps:
[( 1 - 824 ) ÷ 824] x 100 = -99.88%
Formula
Percentage change = [(1 - 824) / 824] x 100
Subtract the new number by the original number
1 - 824 = -823
-823 ÷ 824 = -0.9987864077669902
-0.9987864077669902 x 100 = -99.88%