Total number of prescription claims submitted = 4,500
Number of prescription claims paid = 3,900
Rate of the claims paid expressed as a percent = Number of prescription claims paid/Total number of prescription claims submitted * 100
Rate of the claims paid expressed as a percent = 3,900/4,500 * 100
Rate of the claims paid expressed as a percent = 86.666....%
Rate of the claims paid expressed as a percent = 86.67% (Rounded to two decimals)