SRP usually means "suggested retail price." It is the price suggested by the manufacturer, and may appear preprinted on the article for sale.
If there is a recognized concept known as "suggested retail percentage," Google is not aware of it, nor am I. Perhaps you can explain what you think it is?
If there is a recognized concept known as "suggested retail percentage," Google is not aware of it, nor am I. Perhaps you can explain what you think it is?