-17.78% is the change from 990 to 814
Calculation steps:
[( 814 - 990 ) ÷ 990] x 100 = -17.78%
Formula
Percentage change = [(814 - 990) / 990] x 100
Subtract the new number by the original number
814 - 990 = -176
-176 ÷ 990 = -0.17777777777777778
-0.17777777777777778 x 100 = -17.78%