We want to show an item cost as a percentage.

As a real estate agent we collect rent for our clients.

We then bill our fees (item) as a percentage of the monthly rent we collect.

So for example we collect £1000.00 rent.

We bill (item) 10% of the rent we collect. 

i.e. £100.00

So we want to show our item costs £100.00

But of course we also have rents we collect for all kinds of different amounts calculated at 10%.

How can we best show this fee as an item in each invoice?

Thanks

Gene