user: Question: what being the maximum total passengers 2008 with change 2008/09 being 6.5%
Columns: ['Rank', 'Airport', 'Total Passengers 2008', 'Total Passengers 2009', 'Change 2008/09', 'Aircraft movements 2009']
Types: ['real', 'text', 'real', 'real', 'text', 'real']
Sample row: [1.0, 'London Heathrow Airport', 67054745.0, 66036957.0, '1.5%', 466393.0]
SQL:

assistant: SELECT MAX("Total Passengers 2008") FROM "Table" WHERE "Change 2008/09" = '6.5%';