Hello @thais.bartoli, welcome to the Quick Sight community!
This should be possible by utilizing the detailed tooltip option when customizing your visual. You are able to put various calculated field that could show the actual value in comparison to the percent value.
I am happy to help guide you further if necessary if you can provide a little more detail about the values you are wanting to display. It would also be beneficial if you created a demo dashboard in Quick Sight Arena and shared a link in your response. That will allow me to help you build a solution in a Quick Sight environment. Thank you!