Population Decrease Calculator

Formula

The formula to calculate the Final Population is:

\[ \text{FP} = \text{IP} \times (1 - \text{DR})^{\text{TS}} \]

Where:

FP is the final population.
IP is the initial population.
DR is the annual decrease rate (expressed as a percentage).
TS is the time span over which the population decreases (in years).

What is Population Decrease?

Population decrease refers to the decline in the number of individuals in a population over time. This can occur due to various factors such as lower birth rates, higher death rates, increased emigration, or a combination of these factors. Understanding population decrease is crucial for planning and resource allocation in communities, regions, and nations.

Example Calculation

Let's consider an example:

Initial Population: 100,000
Annual Decrease Rate: 2%
Time Span: 10 years

Using the formula to calculate the Final Population:

\[ \text{FP} = 100,000 \times (1 - 0.02)^{10} \approx 81,707.57 \]

This means that the final population for this scenario is approximately 81,707.57.