-99.4% is the change from 835 to 5
Calculation steps:
[( 5 - 835 ) ÷ 835] x 100 = -99.4%
Formula
Percentage change = [(5 - 835) / 835] x 100
Subtract the new number by the original number
5 - 835 = -830
-830 ÷ 835 = -0.9940119760479041
-0.9940119760479041 x 100 = -99.4%