The reporting rate is the percentage of times that you answered all of the questions related to a particular measure. For individual measures, your reporting rate must be at least 60% meaning you reported the quality measure on at least 60% of those who were eligible. If you create more than 60% of your eligible cases for a measure, you must provider the "answers/numerator option" for at least 60% of the records entered. If you do not meet this threshold, the software will alert you.
The performance rate is the percentage of times you met the measure (answered "done" or "performed") compared to the number of eligible patients entered for the measure. Numerator (# of times measure is met)/Denominator (number of eligible case for the measure). Note that answering with an exclusion option (if applicable) will take the eligible case out of the Denominator prior to final calculation of the performance rate. This will still count towards your reporting rate however.
Performance rates of 100% are a perfect score. There are measures (i.e. Measure 1 Hemoglobin A1c) where a lower calculated performance rate is better. These are called inverse measures and a performance rate of 0% would be a perfect score.