Is there any way to compare two record values of same record type to find the difference?

What I propose is: 

1. Create a CDT with the same structure as the record
2. Create a rule to find the difference between records, in this rule:
   1. Cast your record rule inputs to the CDT you have created (docs.appian.com/.../Casting.html
   2. use the function cdtdifference()
   3. Call a process model which saves the output of the function to the audit database table as you want. 

sreesudhakasibatla  I also achieved my requirement using the method Ignacio Morán  suggested. There is no direct function to compare records.

Correct, I wanted to know if there is a direct function like this for records. But seems like there is none. Will convert it to CDT and then use it. 

Record Events might be an option as well.

Thanks for your responses.Appreciate it.

There is no purpose built function but it's pretty easy to do with code:

a!localVariables(
  local!oldEntity: a!map(
    firstName: "John",
    lastName: "Smith",
    age: "23"
  ),
  local!newEntity: a!map(
    firstName: "Jane",
    lastName: "Smith",
    age: "24"
  ),
  reject(
    a!isNullOrEmpty,
    a!forEach(
      items: a!keys(local!oldEntity),
      expression: a!localVariables(
        local!oldValue: index(local!oldEntity, fv!item, null),
        local!newValue: index(local!newEntity, fv!item, null),
        if(local!oldValue <> local!newValue,
          {
            fieldName: fv!item,
            oldValue: local!oldValue,
            newValue: local!newValue
          },
          null
        )
      )
    )
  ) 
)

There is no purpose built function but it's pretty easy to do with code:

a!localVariables(
  local!oldEntity: a!map(
    firstName: "John",
    lastName: "Smith",
    age: "23"
  ),
  local!newEntity: a!map(
    firstName: "Jane",
    lastName: "Smith",
    age: "24"
  ),
  reject(
    a!isNullOrEmpty,
    a!forEach(
      items: a!keys(local!oldEntity),
      expression: a!localVariables(
        local!oldValue: index(local!oldEntity, fv!item, null),
        local!newValue: index(local!newEntity, fv!item, null),
        if(local!oldValue <> local!newValue,
          {
            fieldName: fv!item,
            oldValue: local!oldValue,
            newValue: local!newValue
          },
          null
        )
      )
    )
  ) 
)

Great, Thank you