Find the percentage and the probability.

A psychologist has devised a stress test for dental patients sitting in the waiting rooms. According to this test, the stress scores (on a scale of 1 to 10) for patients waiting for root canal treatments are found to be approximately normally distributed with a mean of 7.59 and a standard deviation of 0.73.

What percentage of such patients has a stress score lower than 6.0?

Round your answer to 2 decimal places. in %