Note that this is global wealth, whereas golergka's link is about the US specifically.
Turns out, the world in general has a lot more poor people (both absolute, and as a fraction of the population) than the US does, so globally more wealth is concentrated in a smaller population fraction.
I agree that for the world at large the wealth distribution is clearly not good. The good news is that it's been getting a lot better in the last few decades, largely due to India and especially China moving people out of poverty by the hundreds of millions.
Thanks. However, I found that original source for the wealth distribution figures, the Credit Suisse Global Wealth Report, to be a much more interesting read:
http://www.levyinstitute.org/pubs/wp_589.pdf
This study that I found (after just 3 minutes of googling, btw) says that top 1% own only 34.6%. Do you have a source for your figures?