Ladder Headers
The percentages are the WOM (weight of money) which is explained near the bottom of this page of the user guide
https://www.betangel.com/user-guide/display.html
On the ladder screen the arrows just display which side of the book (back or lay) has the greatest WOM at that time
https://www.betangel.com/user-guide/display.html
On the ladder screen the arrows just display which side of the book (back or lay) has the greatest WOM at that time