It's very confusing and unobvious what the percentages are percents of: the country's percentage of total IE6 users, or the IE6 users' percentage of the country? Based on the fact that they add to >100%, I guess that the per country numbers you get when you hover the map are % of that country still using IE6.
But then what are the percents on the ring/pie chart to the side? They don't add to 100%, so they're not percentages of the pie (total IE6 users). But China's percentage there (5.9) doesn't match its percentage in the map (34.5). So, 5.9% of what?
I agree that it's a bad graphic. I think this is what the numbers mean:
On map: percentage of people in that country that use IE6. If there were 300 million people in USA, and 30 million people use IE6 means 10% would show up for USA
On ring: percentage of the world population that uses IE6. If the world population was 6 billion, and 30 million people in USA use IE6, then 0.5% would show up in the ring on the right. It would be better if the ring were bigger, and made to show the 88% of the world that doesn't use IE6 as a gray color.
But then what are the percents on the ring/pie chart to the side? They don't add to 100%, so they're not percentages of the pie (total IE6 users). But China's percentage there (5.9) doesn't match its percentage in the map (34.5). So, 5.9% of what?
This is a terrible infographic.