user: Question: What is the sellout % when the gross sales is $1,727,400?
Columns: ['Dates (MDY)', 'Position', 'Gross sales', 'Tickets sold / available', 'Sellout (%)']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['05-21-08', 3.0, '$2,547,560', '16,870 / 16,870', '100%']
SQL:

assistant: SELECT "Sellout (%)" FROM "Table" WHERE "Gross sales" = '$1,727,400';