Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_177766_1 (per VARCHAR, rank VARCHAR)
### Question:
This constellation with a ranking of 51 has how many percentages on record?
### Answer:
SELECT COUNT(per) AS ­cent­age FROM table_177766_1 WHERE rank = 51