-99.4% is the change from 834 to 5
Calculation steps:
[( 5 - 834 ) ÷ 834] x 100 = -99.4%
Formula
Percentage change = [(5 - 834) / 834] x 100
Subtract the new number by the original number
5 - 834 = -829
-829 ÷ 834 = -0.9940047961630696
-0.9940047961630696 x 100 = -99.4%