-96.58% is the change from 847 to 29
Calculation steps:
[( 29 - 847 ) ÷ 847] x 100 = -96.58%
Formula
Percentage change = [(29 - 847) / 847] x 100
Subtract the new number by the original number
29 - 847 = -818
-818 ÷ 847 = -0.9657615112160567
-0.9657615112160567 x 100 = -96.58%