NodeJS Regex issue with html tags

I have never really used Regex before so I don't know much about it or how to even make one so I came here for help. The html I am trying to parse is something like this here

<div class="stretchgoal_goal_progress_inner" style="width:19%">
&nbsp;
19% / 100%
</div>

I and trying to get the 19% / 100% out of the tags and in the actual div tag the width changes with the percentage so I am lost trying to figure it out