To find the response percentage, you can use the formula:
\[ \text{Response Percentage} = \left( \frac{\text{Number of Responses}}{\text{Total Surveys Mailed}} \right) \times 100 \]
Plugging in the numbers:
\[ \text{Response Percentage} = \left( \frac{17,892}{45,128} \right) \times 100 \approx 39.6% \]
So, approximately 39.6% of the people responded to the survey.