You can swap the percentage with the number of reviews like this:
add_filter('site-reviews/summary/counts', function ($percent, $numReviews) {
return $numReviews;
}, 10, 2);
If you do this, you may also wish to change the text alignment. You can do that like this:
.glsr-bar-percent { text-align: left !important; }
Awesome, thank you!! Is it possible to add a parentheses around the count? Example: (9)
return sprintf('(%s)', $numReviews);
Perfect!! Thank you very much.