Find a Doctor, is a small startup that helps people find a physician that best meets their needs (location, insurance accepted, etc.) During a "slow" time for them, they have 8 staff members taking calls from customers. On average, one call arrives every 9 minutes. On average, each staff member spends 28 minutes with each customer. What is the utilization rate (in percentages) of the staff members? (Note that your answer should NOT include "\%". For instance, if your answer is 20%, then you should write 20 in the blank.) Round your answer to one decimal place