-16.57% is the change from 990 to 826
Calculation steps:
[( 826 - 990 ) ÷ 990] x 100 = -16.57%
Formula
Percentage change = [(826 - 990) / 990] x 100
Subtract the new number by the original number
826 - 990 = -164
-164 ÷ 990 = -0.16565656565656567
-0.16565656565656567 x 100 = -16.57%