Which Annual change has a Capacity in use of 66.21%?
CREATE TABLE "brazil_s_20_busiest_airports_by_passenge" (
  "rank" real,
  "location" text,
  "total_passengers" real,
  "annual_change" text,
  "capacity" real,
  "capacity_in_use" text
);
SELECT "annual_change" FROM "brazil_s_20_busiest_airports_by_passenge" WHERE "capacity_in_use"='66.21%';