-98.79% is the change from 824 to 10
Calculation steps:
[( 10 - 824 ) ÷ 824] x 100 = -98.79%
Formula
Percentage change = [(10 - 824) / 824] x 100
Subtract the new number by the original number
10 - 824 = -814
-814 ÷ 824 = -0.9878640776699029
-0.9878640776699029 x 100 = -98.79%