Acompany is offering to pay a stadium $750,000 per year for naming rights. if the administrative costs for this sponsorship are $63,000, what are the costs as a percentage of the revenue for the stadium-naming sponsorship? (round to the nearest percent.)

To find the costs as a percentage of revenue you will take the administrative costs of the sponsorship and the amount the company is willing to pay for them and divide. 
Administrative costs are $63,000
Amount the company is willing to pay $750,000
$63,000/$750,000 = .084 then to get as a percentage you multiply
.084 by 100 = 8.4%
The costs as a percentage of the revenue for the stadium-naming sponsorship is 8.4%