CREATE TABLE table_204_775 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

how many more medals does hong kong have than chinese taipei ?
SELECT (SELECT "total" FROM table_204_775 WHERE "nation" = 'hong kong') - (SELECT "total" FROM table_204_775 WHERE "nation" = 'chinese taipei')
SELECT (SELECT "total" FROM "table_204_775" WHERE "nation" = 'hong kong') - (SELECT "total" FROM "table_204_775" WHERE "nation" = 'chinese taipei')