CREATE TABLE table_40958 ("Opposition" CLOB, "Span" CLOB, "Lost" FLOAT, "Tied" FLOAT, "Win %" FLOAT)

What is the lowest win percentage for when Perth Scorchers is the opposition?
SELECT MIN("Win %") FROM table_40958 WHERE "Opposition" = 'perth scorchers'
SELECT MIN("Win %") FROM "table_40958" WHERE "Opposition" = 'perth scorchers'