-99.64% is the change from 828 to 3
Calculation steps:
[( 3 - 828 ) ÷ 828] x 100 = -99.64%
Formula
Percentage change = [(3 - 828) / 828] x 100
Subtract the new number by the original number
3 - 828 = -825
-825 ÷ 828 = -0.9963768115942029
-0.9963768115942029 x 100 = -99.64%