-98.67% is the change from 824 to 11
Calculation steps:
[( 11 - 824 ) ÷ 824] x 100 = -98.67%
Formula
Percentage change = [(11 - 824) / 824] x 100
Subtract the new number by the original number
11 - 824 = -813
-813 ÷ 824 = -0.9866504854368932
-0.9866504854368932 x 100 = -98.67%