I need assistance with this problem being worked out in excel

According to the federal government, 24% of workers are covered by their company's health care plan were not required to contribute to the premium. A recent study found that 81 out of 400 workers sampled were not required to contribute to their company's plan. Develop hypotheses that tests whether the percent of workers not required to contribute to their company's plan has declined. Perform your analysis at alpha = 0.05.

What is the test statistic?

What is the p-value?

Did you reject or accept H0? (Enter accept or reject)

Could you prove if the percent of workers not required to contribute to their company's plan has declined? (Enter yes or no)