Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the largest win percentage when John Gartin is coach, the record is 11-0, and the year is 2009?

### Inputs:
table_name: table, columns: ['Year', 'Coach', 'Crew', 'Record', 'Win %']

### Response:
SELECT MAX Win % FROM table WHERE Coach = john gartin AND Record = 11-0 AND Year = 2009