This will work without root, as long as your on KitKat. The only problem is it will display the percentage inside the battery bar, and the percentage will be white, so you can't read it unless its below 30% or so. If your planning on rooting the tablet then you can use xposed, both gravity box, and xblast have circle with percent/ percent color with stock gauge, just percent, percent with gauge etc. Most custom ROM's come with this feature as well.
And no, you can't do it right out of the box with the stock settings, unfortunately.
After making its way through most of the HTC’s One lineup, Android 4.4.2 … more
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