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

### Instruction:
What is the highes win % that manager juan carlos chávez's team had when they lost less than 4 times?

### Inputs:
table_name: table, columns: ['Manager', 'Mexico career', 'Played', 'Drawn', 'Lost', 'Win %']

### Response:
SELECT MAX Win % FROM table WHERE Manager = juan carlos chávez AND Lost < 4