The average hours worked chart shows the distribution of average hours worked per week generated based on the Compensation data at this company.

The number you see in the middle of the doughnut pie chart is the adjusted average of these scores. If you hover over the various sections of the donut, you will see the % breakdown of each workload given.

The percentile score in the title is calculated across the entire Company Database and uses an adjusted score based on Bayesian Estimates (to account for companies that have few interview insights). Simply put, as a company gets more data points, the confidence of a "true measure" increases so it is pulled closer to its simple average and away from the average of the entire dataset.