-99.4% is the change from 827 to 5
Calculation steps:
[( 5 - 827 ) ÷ 827] x 100 = -99.4%
Formula
Percentage change = [(5 - 827) / 827] x 100
Subtract the new number by the original number
5 - 827 = -822
-822 ÷ 827 = -0.9939540507859734
-0.9939540507859734 x 100 = -99.4%