The question is asking us to find the percent of change of a town's population. Initially, the population was 25,800. After, the town's population was 42,600 people. We can use a proportion to find the percent increase. Here is what our setup should look like:
[tex] \frac{42600}{25800} = \frac{x}{100} [/tex]
Now, just solve for x. We can do this by using cross multiplication and simplifying. This results in x being 165.1. Therefore, the answer to your query is that the town population's percent of change is 165.1 percent increase.
