Still behind Windows 7, but not as bad as people make it out to be.
"Based on the current rate of sales, from launch to today, Windows 8 is selling at a rate of a little over 420,000 licenses per day. For reference, Microsoft sold roughly 240 million license of Windows 7 in a 12 month time period but it has taken Windows 8 15 months to hit 200 million sales. It’s quite clear that, while 200 million is a massive number, it is at a slower pace than Windows 7. "
http://www.neowin.net/news/microsoft-more-than-200-million-windows-8-licenses-sold