How to show page number while scrolling a list in xamarin forms?

I have a listview with 2005 items,and it has a lazy loading.On itemAppearing I am loading 50 items at a time.I want to show a page number while user scroll up or scroll down depends on current items on the display.

Example: Listview loads 150 items(50 items each Lazy loading) when I am scrolling and reached to 130 index of listview.At this time I want to show the page number 3.Because 130 listview index is under 100-150.

how to implement this?