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

### Instruction:
Which is the lowest 1980 growth that had 2,610 in 1970?

### Inputs:
table_name: table, columns: ['City', '1970', '1980', '1990', '2000', '2010 est.']

### Response:
SELECT MIN 1980 FROM table WHERE 1970 = 2,610