Grafana Version: Grafana v7.3.1 (6668161a88)

Datasource: Cloudwatch Metrics

Query Mode: Cloudwatch Metrics

NameSpace: AWS/ApplicationELB

I am trying to plot ALB availability using following formula

Availability % = (RequestCount - HttpCode_ELB_5xx_Count) / RequestCount

I could easily get Requestcount and HttpCode_ELB_5xx_Count queries. However, I am not able to get ahead with calculations part. I am aware of transformations. I added “Add Field from Calculations” it is not giving any values in graph. Neither subtraction nor division.

Would appreciate community experts help.