Using css how so I create a pill shape which is circular on one side and angled on the other?

This is the shape I am trying to create:

This is what I have so far:

This is my code:

.pill-left {
  position: relative;
  width: 50px;
  height: 50px;
  background: #FDA725;
  display: inline-block;
  border-radius: 100% 100% 0 0;
  transform: rotate(-90deg);
}

.pill-right {
  position: relative;
  width: 50px;
  height: 50px;
  background: #CED2D9;
  display: inline-block;
  border-radius: 100% 100% 0 0;
  transform: rotate(90deg);
}

<div class="pill-left">5</div>
<div class="pill-right">10</div>

The two issues I have is firstly how to display the text within the pill and not be rotated, the second is how to achieve the sloping line. I have tried a few things such as border-right: 50px. How can I achieve this? I suspect it is obvious but I can't get it to work. Thanks

you could accomplish this with a linear-gradient background:

A brief explanation
a linear-gradient background colour handles both pill colours - setting the positions the same here (eg. 48% & 48%, then 52% & 52%) means there's no blend between them.

to get fully rounded corners we set border-radius to half the height of the element or greater - there's no harm in going larger, so 9999px just ensures it will always be more than the element height.

you don't necessarily need display:flex & justify-content in this instance, but it will ensure the percentages are aligned at both ends of the pill if you set a specific width for example.

.split-pill {
  border-radius: 9999px;
  padding: 10px;
  display: inline-flex;
  justify-content:space-between;
  background: linear-gradient(-70deg, #FDA725 48%, white 48%, white 52%, #CED2D9 52%);
}

.left {
  padding-right: 10px;
}

.right {
  padding-left: 10px;
}

<div class="split-pill">
  <span class="left">10%</span>
  <span class="right">50%</span>
</div>