Displaying book progress (total pages, percentage, or pages in chapter)
In the reader, tap the center of screen to show or hide your reading progress.
By default, you'll see your current page out of the total pages in the book (e.g. "6 of 587").
Tap the page numbers to display your progress in other ways. Tap once to show the pages left in the current chapter or twice to show your total progress as a percentage.