Hello Jayanthi,
I see from the URL you shared a reference to Turbonomic. If you are working in Turbonomic you may want to post this question in the Turbonomic thread.
If you are working in Cloudablity however you may want to review the the Rightsizing recommendation instructions for your Clouds Service provider / instance type.
Those can be found here, note you'll want to check the navigation page on the left to find the page(s) appropriate to the CSP(s) you are working with.
https://www.ibm.com/docs/en/cloudability-commercial/cloudability-premium/saas?topic=optimize-cloudability-rightsizing-in-cloudability
Note depending on the CSP the columns with which you can sort and filter righting recommendations may vary:
https://www.ibm.com/docs/en/cloudability-commercial/cloudability-premium/saas?topic=optimize-cloudability-rightsizing-in-cloudability