-10.4% is the change from 990 to 887
Calculation steps:
[( 887 - 990 ) ÷ 990] x 100 = -10.4%
Formula
Percentage change = [(887 - 990) / 990] x 100
Subtract the new number by the original number
887 - 990 = -103
-103 ÷ 990 = -0.10404040404040404
-0.10404040404040404 x 100 = -10.4%