user: Question: What is the average change to have a land area of 546.74 and a population density greater than 0.5?
Columns: ['Rural municipality (RM)', 'RM No.', 'SARM Div. No.', 'Census Div. No.', 'Population (2011)', 'Population (2006)', 'Change (%)', 'Land area (km²)', 'Population density (per km²)']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Aberdeen No. 373', '373', '5', '15', 1016.0, 765.0, 32.8, 673.42, 1.5]
SQL:

assistant: SELECT AVG("Change (%)") FROM "Table" WHERE "Land area (km²)" = 546.74 AND "Population density (per km²)" > 0.5;