The decadal growth rate represents the percentage change in the population size between two census periods, typically ten years. It is calculated by comparing the population at the beginning of the decade with the population at the end. The formula for calculating the decadal growth rate is straightforward:

Decadal Growth Rate =(Population at the end of the decade−Population at the start of the decade)/ (Population at the beginning of the decade)×100

This formula helps us quantify the increase or decrease in population over a specific decade. A positive growth rate indicates population expansion, while a negative rate signals a decline. Decadal growth rate is beneficial for long-term infrastructure, healthcare, education, and employment planning.