If it is a balance, it is displayed as a negative number, indicating that there is still a balance in the card after deducting the arrears that have been recorded, that is, the landlord has saved more money.
If it is available, it will be displayed as a negative number, indicating that the landlord has used up all the quotas and has exceeded them.
These are two completely different situations, depending on which one the landlord is looking at.
If the landlord has other questions, you can ask.