There are a number of ratios and statistics that are commonly used to measure membership and operating performance in the industry. While this is not a complete list of all possible ratios in this category, I recommend the following as key indicators and critical to your analysis as it pertains to membership and operations: Membership Attrition (measured on an annual basis for a more accuracy), Average dues payer (or average monthly dues), average initiation fees, revenue per square foot, revenue per member, memberships per square foot, cost of sale (sales and marketing cost per new member, payroll to/or as a percentage of revenue, dues as a percentage of revenue, operating expense as a percentage of revenue.

I also recommend the calculation of finance and liquidity ratios such as the current ratio and debt-equity ratio to measure the financial position of your operation(s).