I’m very new to statistics and I’m stuck on what formula to use for an assignment.

I have the information that 32.19 % of my population is positive to a product. If I take a sample of 100 from my population, then what is the probability of the sample proportion, of people being positive to the product, deviates max +/- 5 % from the proportion of positive people in the population.

The curve is 0,256 in skewness, population consists of 4 260, population mean is 2,71 and standard deviation is 1,267

Would be really grateful for any help in how to solve this. The answer to the question would be nice but what I'm really looking for is what formula to use for this and what the formula is called. My book on the subject is heavy and confusing