-16.36% is the change from 990 to 828
Calculation steps:
[( 828 - 990 ) ÷ 990] x 100 = -16.36%
Formula
Percentage change = [(828 - 990) / 990] x 100
Subtract the new number by the original number
828 - 990 = -162
-162 ÷ 990 = -0.16363636363636364
-0.16363636363636364 x 100 = -16.36%