Population change formula

Annual population growth rate = [(population at the end of the year-population at the beginning of the year)/population at the beginning of the year ]* 100%.

Population is a social entity with complex content and comprehensive social relations, with gender, age and natural composition, various social composition and social relations, economic composition and economic relations. The birth, death and marriage of the population are in family relations, ethnic relations, economic relations, political relations and social relations, and all social activities, social relations, social phenomena and social problems are related to the population development process. Population is the necessary condition of social material life and the basis and subject of all social production behaviors.