How can I write a script or a batch that will enable me to change image file name to each specific name?

How can I write a script or a batch that will enable me to change image
file name to each specific name?

I have a bunch of images (thousands) that their file name correspond to an
employee number in a spreadsheet. How do I write a script that will change
the file name of the image into an an employee number?
This is how spreadsheet looks like:
I have two columns in a spreadsheet "Employeenumber" e.g: 10003568 &
"FileName" e.g: A647AC16825A4DBF86E0b704E4E9F853(1).jpg and thousands of
rows.
I'm using Windows.