Each month, the folks over at Net Applications keep tabs on the usage share of various operating systems based on their wide network of meta data. And seeing that the month of August is now behind us, we can take a look at the usage share for desktop operating systems for that month.
The two charts you see at the top of this post are for the month of August (left) and July (right). Based on this data, we can conclude that Windows 8 and 8.1 have grown slightly in the number of users who are actively using the platform while Windows XP has dropped roughly one percent during the last month.
During the same time period, Windows 7 usage remained flat which means that those who have left Windows XP have either gone to Windows 8, or possibly to rival platforms.
Source
A Guy