Find industry advertising-to-sales ratio data. Why do some industries have higher advertising-to-sales ratios than others?
Using the percent of sales method, an advertiser sets its budget at a certain percentage of current or forecasted sales. However, determining what percentage to use is not always clear. Many marketers look at industry averages and competitor spending for comparisons. Web sites and trade publications publish data regarding industry averages to guide marketers in setting the percentage to use.