question: Which Population density (per km²) has a Change (%) larger than 4.9, and a Land area (km²) smaller than 15.59, and a Population (2011) larger than 790?
answer: SELECT MAX(population_density__per_km²_) FROM table_name_90 WHERE change___percentage_ > 4.9 AND land_area__km²_ < 15.59 AND population__2011_ > 790
context: CREATE TABLE table_name_90 (population_density__per_km²_ INTEGER, population__2011_ VARCHAR, change___percentage_ VARCHAR, land_area__km²_ VARCHAR)