Have you tried adding slice labels? (Customize tab > Pie chart > Slice label: Value)

Then make the chart area bigger or the "label font size" smaller, and you should see the values popping up.

If you want to remove the percentages then remove the Legend (Customize tab > Legend > Position: Left

You can also change the color of each series if you want some nicer pallette (Customize tab > Series > Format color)