In this problem, we can really see the effect of compound growth. Using the same formula as before, the growth of the population is found to be 163,666.
the growth rate is 15% per month, and the length of growth is 20 months. The initial population is given as 10,000. In this next problem, we will look at a case in which the population grows on a shorter time scale of a month. Sometimes these numbers are rounded to the closest integer because you can have half a person. Plugging in the information from the steps above, the final population is calculated to be 17958.56. In this example, the growth occurs for 5 consecutive years.įinally, the final population amount can be calculated using the formula above. Next, you must determine the total number of years or periods that the growth occurs for. This is typically a growth rate per year in percent, but it can be any period length the problem calls for.įor this problem, the growth rate is found to be 12% per year. Next, you must calculate or estimate the growth rate. For this example, the initial population size is estimated to be 10,000.
Percent increase calculator how to#
How to calculate population growth?įirst, the initial population must be determined. Population growth is defined as the percentage increase in a population over a given time period.
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