-99.88% is the change from 847 to 1
Calculation steps:
[( 1 - 847 ) ÷ 847] x 100 = -99.88%
Formula
Percentage change = [(1 - 847) / 847] x 100
Subtract the new number by the original number
1 - 847 = -846
-846 ÷ 847 = -0.9988193624557261
-0.9988193624557261 x 100 = -99.88%