Pie Chart One cell the whole and another a partial of the whole

Please help. I have two cells.
Cell 1 showing qty of 100. This is the whole number of orders
Cell 2 showing a qty of 10. This is part of the whole known as how many of the 100 orders had failures.

As of right now, my pie chart is adding the two cells, totaling 110. What i want it to do is know that the 100 orders is the total and 10 orders failed within those 100...

Forgot to mention... Excel 2010.... and I'm very tired so please simplify your response... LOL!

Please helps.