The formula for net migration rate is:
Net Migration Rate = (Number of immigrants - Number of emigrants) / Total population * 1000
Where:
- Number of immigrants: The number of people who have moved into a country.
- Number of emigrants: The number of people who have moved out of a country.
- Total population: The total population of the country.
The net migration rate is typically expressed per 1,000 people in the population. This formula helps to calculate the net impact of migration on a country's population.