Hello Chinyimba Chumbu 

You can use this article which will guide you on how to do salary increase using a percentage. Please click on this LINK

Regards

Jacqualina 

Hello Chinyimba Chumbu 

Check the suggested answer shared with you.

Let us know if it was helpful by clicking on Verify answer.

Sharon

Hi Chinyimba

Depending on how you add the increase, there's an increase type column which have two options, amount or percentage. You will need to select the percrentage and add the %

See the below links for more information:

Employee Management - Employees - Individual Increase (sage.com)

Utilities - Bulk Employee Update - Apply Bulk Increase (sage.com)