-99.88% is the change from 834 to 1
Calculation steps:
[( 1 - 834 ) ÷ 834] x 100 = -99.88%
Formula
Percentage change = [(1 - 834) / 834] x 100
Subtract the new number by the original number
1 - 834 = -833
-833 ÷ 834 = -0.9988009592326139
-0.9988009592326139 x 100 = -99.88%