What is the percent change from 08/09 for belfast international?
CREATE TABLE "2009_data" (
  "rank" real,
  "airport" text,
  "total_passengers" real,
  "pct_change_2008_2009" text,
  "international_passengers" real,
  "domestic_passengers" real,
  "transit_passengers" real,
  "aircraft_movements" real,
  "freight_metric_tonnes" real
);
SELECT "pct_change_2008_2009" FROM "2009_data" WHERE "airport"='Belfast International';