CREATE TABLE table_203_855 (id DECIMAL, "date" TEXT, "city" TEXT, "venue" TEXT, "member" TEXT, "performance" TEXT, "notes" TEXT)

how many days after september 3rd did brian perform in stockholm ?
SELECT (SELECT "date" FROM table_203_855 WHERE "city" = 'stockholm') - 3
SELECT (SELECT "date" FROM "table_203_855" WHERE "city" = 'stockholm') - 3