How to see battery percentage on iPhone / iPad / iPod

Its sometimes very useful to know the exact remaining battery percentage on your iPhone and iPad or iPod. It helps you better manage your phone usage to preserve the battery and plan better. The battery symbol helps to get an idea about the remaining power storage in your phone, but its difficult to judge the exact remaining power from the battery graph. This is when the percentage count comes handy.  Also the best part of this is that it is part of iOS and not any third party app.

To enable this option:
Settings > General > Usage >Battery Usage.
Here turn on the battery Percentage option.

This option can be used to enable ( turn on ) / disable ( turn off ) the remaining battery percentage on your iPhone or iPad.