The formula to calculate the Contraceptive Prevalence Rate (CPR) is:
\[ \text{CPR} = \frac{\text{WU}}{\text{TW}} \times 100 \]
Where:
Let's say the number of women using contraception (WU) is 500 and the total number of women (TW) is 2000. Using the formula:
\[ \text{CPR} = \frac{500}{2000} \times 100 = 25\% \]
So, the contraceptive prevalence rate is 25%.