-10.91% is the change from 999 to 890
Calculation steps:
[( 890 - 999 ) ÷ 999] x 100 = -10.91%
Formula
Percentage change = [(890 - 999) / 999] x 100
Subtract the new number by the original number
890 - 999 = -109
-109 ÷ 999 = -0.1091091091091091
-0.1091091091091091 x 100 = -10.91%