Best way to handle multiple fields that relate to one another?

I have a number of Entry controls that are bound to properties of type decimal.

There are relationships between each one - List price, discount, selling price, etc.

Updating one of the fields updates the others, but sometimes due to rounding issues it's not always possible to arrive at the exact same discount % depending on which field you updated.

Using SetProperty within the setters for each property can result in the figures updating continuously. Is there some way of me updating all the relevant private values, then notifying the Page to update the UI from the properties, instead of updating the properties to avoid executing multiple setters?