In determining service desk metrics, you can prefer capturing data through various attributes of service request metrics. They are stated below:
1. Customer satisfaction score (CSAT)
One of the best key performance indicators for IT service desk performance improvement is CSAT.
It is not at all rocket science. All it takes is to ask your customers or service desk users how they feel about the service responses they receive.
Usually, the CSAT metric is captured on a scale of 1 to 5 or 1 to 10, and the CSAT feedback survey can ask you to choose any options from very satisfied to very unsatisfied.
If your CSAT score is higher, your users will be happy with your service quality. The opposite is true if your CSAT score is low.
How to calculate the CSAT rate:
Calculate CSAT every quarter or month to have enough time to improve your customer satisfaction score with your service desk.
Divide the CSAT score you collected by the total customer responses and multiply it by 100.

2. Customer effort score or CES
The word ‘effort’ in CES says it all.
How much effort a user needs to exert while trying to solve a problem through a service desk is all that is a metric that defines customer effort score.
How to calculate CES:
Three simple ways constitute how CES must be measured —
Word-based scale
Numerical scale
Sentiment scale
On a scale of ‘very easy’ or ‘very difficult’, the customer effort score can be measured.
So, you can choose any of these methods to calculate CES and divide the sum of CES scores by the total responses collected. To get a percentage, multiply it by 100.

3. Net promoter score (NPS)
This is another effective service desk KPI to measure the effectiveness of your IT help desk.
With ecommerce interactions, customers are more likely to ask, ‘How likely are you eager to recommend our service to others?’
On a scale of 0-10, which focuses primarily on two key metrics, highly and never, are used to know user loyalty and advocacy. In the language of NPS, users who recommend your service desk to others are recognized as promoters, and those who don’t are known as detractors.
How to calculate NPS:
It is easy to measure the NPS score. Just subtract the detractor percentage from the promoter percentage.
Let’s know one thing: the NPS survey also collects passive scores, but they are not measured.

4. Service level agreement or SLA
As per ITIL, SLA or service level agreement compliance thoroughly explains how to provide service and meet user expectations.
Service desks must maintain a specific timeframe based on SLA to address and resolve issues. If a service is denied within this timeframe, it is known as a violation of SLA, which also compromises user experience.
How to calculate the SLA rate:
Divide the number of tickets resolved by the number of tickets received by your service desk and multiply it by 100 to get a percentage. Forget not to pick the same period for the calculation.
