An optometry store offers two different types of eye services, full-service and glasses-only. The full-service require(s) three steps: eye examination, glasses fitting and checkout. The glasses-only only require(s) two steps: glasses fitting and checkout. The eye examination step has a capacity of 4 patients per hour. The glasses fitting step has a capacity of 11 patients per hour. The checkout step has a capacity of 6 patients per hour. The demand for full-service is 9 patients per hour, and the demand for glasses-only is 13 patients per hour.

What is the implied utilization of the bottleneck resource?

Note: Round your final answer to the nearest integer percentage.