Singapore is 8.1% larger than Changge (China).
Area: 697 km2 World Factbook
Population: 5,567,301 (July 2014) World Factbook
Singapore, officially the Republic of Singapore, is a sovereign city-state and island country in Southeast Asia. It lies off the southern tip of the Malay Peninsula and is 137 kilometres north of the equator. Wikipedia
Area: 645 km2 calculated
Changge is a city of Xuchang, Henan Province, China. In the Han Dynasty, it was known as Changshe is a county-level city in the central of Henan province in China. It ranges in latitude from 34°09' to 34° 20'N and longitude from 113° 34' to 114°08'E. Wikipedia