-96.5% is the change from 828 to 29
Calculation steps:
[( 29 - 828 ) ÷ 828] x 100 = -96.5%
Formula
Percentage change = [(29 - 828) / 828] x 100
Subtract the new number by the original number
29 - 828 = -799
-799 ÷ 828 = -0.964975845410628
-0.964975845410628 x 100 = -96.5%