How to display approvers history in the notification sent for the approval for Custom Process Workfl

Summary:

I need some suggestion like i have designed a three level approval hierarchy Custom Process Workflow. I need to add approval history like with whom the approval is pending or who has approved that i need to mention in the notification sent for the approval.it is a custom Process Work Flow.

Content (please ensure you mask any confidential information):

and Also I have stored the data in DB like Who is approved then the approved flag in the Database Will be 'Y' other wise pending , If rejected then 'N'

is there anything that i can get from this to get the approval history in the notification sent for the approval as well.