How could an airport hotel have an occupancy rate of more than 100 percent?

A particular hotel, may actually have 100 rooms, but only 40 rooms (40 percent of 100 rooms) seem to get filled at any one time. So they will call that 40 rooms "100% occupancy" even though they actually have 60 more rooms available.

Then, let's say, that there is an unusual situation that causes many canceled flights which then results in demand for many more than the typical 40 rooms, (let's say 80 rooms), and the NEW number of rooms filled will then be called a 200% occupancy rate.

It's just a relabeling of the numbers.