How to find Difference between two dates in Years with calculated fields in Model Driven Apps

Implementation Steps:

1. Navigate to https://make.powerapps.com

2. Click Solutions (if Already Available) else create a new Solution and add New Table or Existing Table

3. Create a new Field inside that Table (Start Date)

4. Create another field called End Date 

5. Save the Table

6. Create a Whole Number Field as Calculated

7. Click Calculation --> It will save the table and open a Separate Tab.

8. Once the Page Opens add following Condition

•    Start Date Contains Data
•    End Date Contains Data

9. Add DIFFINYEARS (It is used to find difference between two dates)

10. Write below Query in the Action Field

DIFFINYEARS(cr2f9_startdate, cr2f9_enddate)

11. Now add 

• Start Date
• End Date
• Difference in Date 

Fields into the Form.

12. Open a new Record and Input Date and Click Save

Positive Number : (End Date is Future)

Negative Number : (End Date is Past)

That's it