What does the Rate of Natural Increase formula express as a percentage?

The Rate of Natural Increase is a demographic measure that indicates the growth rate of a population. This formula is calculated by subtracting the Crude Death Rate (CDR) from the Crude Birth Rate (CBR). The resulting figure is then expressed as a percentage of the population.

The correct expression highlights how the natural increase of a population is influenced purely by the number of births and deaths, without accounting for migration factors. Therefore, by focusing on the difference between births and deaths, we can determine whether a population is growing or declining based solely on its natural demographic processes.

Other options present different combinations of demographic factors but do not accurately represent the rate of natural increase in the context of population growth calculations, which specifically relies on the balance of live births and deaths.