 how many more points did kallithea score in the first leg of the second round of the 198485 greek cup than the second leg ?
CREATE TABLE table_203_350 (
    id number,
    "team #1" text,
    "agg." text,
    "team #2" text,
    "1st leg" text,
    "2nd leg" text
)
SELECT (SELECT "1st leg" FROM table_203_350 WHERE "team #1" = 'kallithea') - (SELECT "2nd leg" FROM table_203_350 WHERE "team #1" = 'kallithea')