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

### Instruction:
What is the average change to have a land area of 546.74 and a population density greater than 0.5?

### Inputs:
table_name: table, columns: ['Rural municipality (RM)', 'RM No.', 'SARM Div. No.', 'Census Div. No.', 'Population (2011)', 'Population (2006)', 'Change (%)', 'Land area (km²)', 'Population density (per km²)']

### Response:
SELECT AVG Change (%) FROM table WHERE Land area (km²) = 546.74 AND Population density (per km²) > 0.5