CREATE TABLE table_name_89 (pct INT, years VARCHAR, wins VARCHAR)

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