CREATE TABLE table_203_763 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "notes" TEXT)

what is the difference in the meters for the 1985 competition and the 1987 competition ?
SELECT (SELECT "notes" FROM table_203_763 WHERE "year" = 1985) - (SELECT "notes" FROM table_203_763 WHERE "year" = 1987)
SELECT (SELECT "notes" FROM "table_203_763" WHERE "year" = 1985) - (SELECT "notes" FROM "table_203_763" WHERE "year" = 1987)