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

### Instruction:
What is the lowest percentage of wins for 6½ games and more than 77 total wins?

### Inputs:
table_name: table, columns: ['Season', 'Wins', 'Losses', 'Win%', 'Games behind', 'Playoffs', 'Results']

### Response:
SELECT MIN Win% FROM table WHERE Games behind = 6½ AND Wins > 77