Help to Subtract Text

Hi,

I've got the access to a pretty big file where there I need to subtract text. Please review the attached file.
Example: In cell A2 there is a text "PrestigeAssam" and in cell B2 there is text "Assam". So now I want in C2 there is this text "Prestige" through automation.

Screenshot 2021-05-01 at 1.32.36 PM.png
Sorry unable to upload worksheet so uploading a screenshot. Please help.

Try:

Formula:

=SUBSTITUTE(A2, B2, "")