Find the initial population size
Find the final population size
Subtract the initial population from the final population
Divide the change in population by the initial population
Multiply the result by 100 to get the growth rate percentage
Use the formula: Population growth rate = ((Final population – Initial population) / Initial population) × 100
If needed, calculate annual growth by dividing the total growth rate by the number of years
If needed, include births, deaths, immigration, and emigration in the calculation
Use the formula: Population change = Births – Deaths + Immigration – Emigration