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

### Instruction:
Name the total number of rank for percentage change yoy 13.1%

### Inputs:
table_name: table, columns: ['State Rank', 'National Rank', 'Institution', 'Location', 'Public or Private', 'Endowment Funds', 'Percentage Change YOY']

### Response:
SELECT COUNT National Rank FROM table WHERE Percentage Change YOY = 13.1%