Using prevgroupval as a summary field for parentgroupval report formula - Salesforce Developer Community
![Using the PREVGROUPVAL() function in Summary report - Salesforce Lightning Reporting and Dashboards [Book] Using the PREVGROUPVAL() function in Summary report - Salesforce Lightning Reporting and Dashboards [Book]](https://www.oreilly.com/api/v2/epubs/9781788297387/files/assets/1c2b627e-17e5-407a-8cea-3d97aca05f99.png)
Using the PREVGROUPVAL() function in Summary report - Salesforce Lightning Reporting and Dashboards [Book]
![data - A summary formula field in report used to count sum of related lookup records is displaying incorrect value - Salesforce Stack Exchange data - A summary formula field in report used to count sum of related lookup records is displaying incorrect value - Salesforce Stack Exchange](https://i.stack.imgur.com/Ytor9.png)
data - A summary formula field in report used to count sum of related lookup records is displaying incorrect value - Salesforce Stack Exchange
![lightning - How to calculate average of text field in salesforce reports? - Salesforce Stack Exchange lightning - How to calculate average of text field in salesforce reports? - Salesforce Stack Exchange](https://i.stack.imgur.com/5nhqU.png)
lightning - How to calculate average of text field in salesforce reports? - Salesforce Stack Exchange
![reporting - Report 'Custom Summary Formula': Can I apply the formula to only certain groupings? - Salesforce Stack Exchange reporting - Report 'Custom Summary Formula': Can I apply the formula to only certain groupings? - Salesforce Stack Exchange](https://i.stack.imgur.com/K230W.jpg)