Once you have all the necessary information, it’s time to calculate your contact center service level. There are three different call center metrics formulas to help you do this.
Formula #1
The number of calls answered during the given threshold, divided by the total number of calls answered, X 100%.
This method is the simplest of the three we’ll consider and is perhaps the most commonly used because of this. One downside of this call center service level formula, however, is that it does not consider abandoned calls alongside answered ones.
Formula #2
The number of calls answered during the given threshold + the number of calls abandoned during the given threshold, divided by the total number of calls answered + the total number of calls abandoned, X 100%.
Unlike the first formula we considered, this method takes both answered and abandoned calls into account.
Formula #3
The number of calls answered during the given threshold, divided by the number of calls answered + the number of calls abandoned, X 100%.
Similar to the second formula we considered, this method also considers abandoned calls. Where they are considered positive in the second formula, however, here, they are negative.