CREATE TABLE table_16331025_2 (dates__mdy_ VARCHAR, position VARCHAR, sellout___percentage_ VARCHAR)

Who many dates are in position 9 and the sellout is 81%?
SELECT COUNT(dates__mdy_) FROM table_16331025_2 WHERE position = 9 AND sellout___percentage_ = "81%"
SELECT COUNT("dates__mdy_") FROM "table_16331025_2" WHERE "81%" = "sellout___percentage_" AND "position" = 9