How many Capacity has a Annual change of 53.4% and Total Passengers smaller than 7,822,848?
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 AVG("capacity") FROM "brazil_s_20_busiest_airports_by_passenge" WHERE "annual_change"='53.4%' AND "total_passengers"<'7,822,848';