First Contact Resolution (FCR) is a measure of the effectiveness with which a company is resolving customer queries. It basically measures the rate at which customer queries are resolved at first contact.
FCR Call Statistics (A) = (Total number of queries) / (Total number of calls) x 100
This indicator will be included in my book: Key Performance Indicators - the 100 measures every manager needs to know, which contains an in-depth description of this KPI, as well as practical advice on data collection, calculations, target setting, and actual usage.