user: Question: What is the lowest win percentage for when Perth Scorchers is the opposition?
Columns: ['Opposition', 'Span', 'Lost', 'Tied', 'Win %']
Types: ['text', 'text', 'real', 'real', 'real']
Sample row: ['Auckland Aces', '2011–2012', 1.0, 0.0, 50.0]
SQL:

assistant: SELECT MIN("Win %") FROM "Table" WHERE "Opposition" = 'Perth Scorchers';