-99.03% is the change from 827 to 8
Calculation steps:
[( 8 - 827 ) ÷ 827] x 100 = -99.03%
Formula
Percentage change = [(8 - 827) / 827] x 100
Subtract the new number by the original number
8 - 827 = -819
-819 ÷ 827 = -0.9903264812575574
-0.9903264812575574 x 100 = -99.03%