Those figures are the percentage of office space that is unleased. However, there is a good chunk of office space that is leased by someone yet isn't actually

Those figures are the percentage of office space that is unleased. However, there is a good chunk of office space that is leased by someone yet isn't actually used every day. Usually because the company now does WFH yet can't terminate the lease early. There seem to be a large number of employees who have a desk in an office, yet barely ever use it too. I'm classing any seat that doesn't have an ass on it during the day as unoccupied.