I often need to use a percentage in calculations. Numeric can work, but a dedicated percentage type would be useful in forms and surveys. This would be especially helpful for staff that isn't as familiar with percentage math and dealing with the decimal places.

Being able to set the number of decimals (0- 4? 5?) would be required

Examples:

1 - Custom Field (downpayment %) x Custom Field (Sell Price) results in the Downpayment in $.

2 - Custom Field (Origination %) x Custom Field (Broker Fee %) x Custom Field (Estimated Insurance %) + Custom Field (Document Processing $) = Est Closing Costs

(Apologies if this a repeat. I tried to check)