What a strange coincidence! 97% of the Fortune 500 also use Dropbox. :-)
From https://www.dropbox.com/news/company-info: "Dropbox is used in over 4 million businesses with presence in 97 percent of Fortune 500 companies."
From https://www.dropbox.com/news/company-info: "Dropbox is used in over 4 million businesses with presence in 97 percent of Fortune 500 companies."
The really relevant number is how many of those Fortune 500 companies are fully paid up customers vs a just bunch of people using their free personal account to share files within a project on a ad-hoc basis.
Mind you searching for information on this is nearly impossible as Box co. don't have a trademark to distinguish themselves by.