Demetrius owns his home and pays a monthly mortgage payment of $786 for it. (Recall that a mortgage payment is the payment made on a home loan each month.) His mortgage payment includes costs for property taxes and homeowner's insurance, which is a standard practice. His annual gross (pre-tax) salary is $39,764. His utilities typically cost $151 per month. What is his housing expense ratio? (Enter the answer in PERCENTAGE FORMAT, rounded to the nearest 0.1%, without the ' % ' sign. For example, if the answer were 0.12345 in decimal format, enter ' 12.3 ' for the answer, since 12.345% rounds to 12.3%.)