In the list of all registrations for your event, we show indicators for whether each attendee has a balance due, forms due, or missing profile information. Alongside the balance due indicator, you'll now see the amount due for that attendee.
If there are multiple attendees on the registration and the registration has been partially paid, the balance shown on each attendee will be calculated based on their percentage of the registration total. (For example, let's say that Anna and Matthew registered together. Anna's cost is $5; Matthew's is $10. If a payment has been made for $3, Anna's remaining balance would be $4, and Matthew's would be $8.)