CREATE TABLE table_13836704_6 (_percentage_change_2008_2009 VARCHAR, airport VARCHAR)

What is the percent change from 08/09 for belfast international?
SELECT _percentage_change_2008_2009 FROM table_13836704_6 WHERE airport = "Belfast International"
SELECT "_percentage_change_2008_2009" FROM "table_13836704_6" WHERE "Belfast International" = "airport"