Thank you? It was not probably your intention but the article actually mentions how Pie charts actually suck. They were here only to illustrate that. Although it could be said I illustrated my point with a pie chart. So if you didn't read is ok. If you actually mean it, then I find that offensive. If You have a different point am all ears.
from the beginning, I was only good with pie chart but anyway I am poor in math/data
In the future try to use more bar charts and other line diagrams. They are better.