C262 Don't understand

Puzzled 262

The number of Eternal Red Variant viruses quickly increased, and their impact on the Internet quickly surpassed that of the joking Bitcoin blackmail virus.

In the global desktop Operating System market, Windows has a market share of 92.1%, of which Windows XP has a market share of 65.5%; Windows Vista has a market share of 16.5%; and Windows 7 has a market share of 8.9%