-99.03% is the change from 825 to 8
Calculation steps:
[( 8 - 825 ) ÷ 825] x 100 = -99.03%
Formula
Percentage change = [(8 - 825) / 825] x 100
Subtract the new number by the original number
8 - 825 = -817
-817 ÷ 825 = -0.9903030303030304
-0.9903030303030304 x 100 = -99.03%