But what are the raw numbers?
Without the raw numbers, percentages don't tell us what the article claims to. If the hits associated with one version of the OS suddenly disappeared entirely, then the other remaining versions would magially have a higher percentage of the total. There's no true increase for any of them unless one or more of the remaining ones also gets an actual increase in the number of installed systems
Without knowing the raw numbers, this article is not merely a waste of reading time, it may also be completely misleading.