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_name_89 (pct INTEGER, years VARCHAR, wins VARCHAR)
### Question:
Which Pct has Years of 1957–1970, and Wins smaller than 78?
### Answer:
SELECT SUM(pct) FROM table_name_89 WHERE years = "1957–1970" AND wins < 78