Are you a family day care provider?
You should have the CCB hand book - stubby fat blue book. In the back there are the calculation tables specific to which child care type you are - ie family day care or long day care - use that to work out your new calculations.
If you don't have it, I have it at work and could look it up tomorrow for you. As far as I can remember - (my computer works ours out!), you have to total the hours used for the family and divide and multiply a number of things together to work it out. The higher hourly rate means the family pays a bit less - usually this means centres raise their fees on the 1st July.