You started with a time series of actual sales data for $8$ quarters $($a quarter is a $3$ month period, such as Fall $2021).$ You used this data to determine that there is a trend of $-220.$ Quarter $10\text{'}$s actual sales are $10,769.$ What is your trend$-$based forecast for quarter $11?$ Note that the trend here is negative. State your answer as whole number.