-98.79% is the change from 825 to 10
Calculation steps:
[( 10 - 825 ) ÷ 825] x 100 = -98.79%
Formula
Percentage change = [(10 - 825) / 825] x 100
Subtract the new number by the original number
10 - 825 = -815
-815 ÷ 825 = -0.9878787878787879
-0.9878787878787879 x 100 = -98.79%