Let's repeat that: 2.8 per cent.
Hindsight, of course, is 20/20. It's easy to laugh at Microsoft now, but it's worth remembering that there was a time when smart analysts thought that the mobile operating system Windows Phone could overtake Apple's iOS by the end of 2015.
Windows Phone had some interesting features, it promised integration with the world's dominant computer operating system, and those candy-colored Lumia phones usually were well made.
But by the time Nadella took the wheel at Microsoft - and former Nokia head Stephen Elop said "so long" soon thereafter - it seemed as if Microsoft's whole smartphone business wasn't long for this world.
Instead of playing catch-up on hardware, Nadella has focused the company's efforts more squarely on software and the cloud, where its mobile efforts have actually seen a rebirth. Rather than trying to get more developers to write programs for its anemic app store, Microsoft's focused on getting its own apps in more places. Since Nadella took over, the Office suite has gotten pretty good mobile apps, even for non-Microsoft products including - gasp! - the iPhone.
And Microsoft is also clearly thinking beyond apps. It may be hard to remember, but Microsoft was the company to kick off this "bots are the future" wave of discussion at its Build conference in March. And while its efforts to launch a bot didn't go so well - Tay, the innocent bot with the millennial voice, ended up getting seriously corrupted by humanity - the company should get credit for a little forward thinking.
After all, bots really could signal the decline of apps, by unifying the services you get from a dozen or more separate apps into one product. Assistants like Microsoft's Cortana are already trying to unify reminder, calendar, traffic and search apps - and that's just the beginning.
Smartphones aren't over, of course. But they are becoming more important for what they can do rather than just what they are, and that seems to be Microsoft's focus moving ahead. It's pursuing a life operating system. Because whoever can crack that code and build a central program that works everywhere - no matter what device we're using - will be the leader of the next few years.