-16.46% is the change from 990 to 827
Calculation steps:
[( 827 - 990 ) ÷ 990] x 100 = -16.46%
Formula
Percentage change = [(827 - 990) / 990] x 100
Subtract the new number by the original number
827 - 990 = -163
-163 ÷ 990 = -0.16464646464646465
-0.16464646464646465 x 100 = -16.46%