<div role="progressbar" aria-valuenow="67" aria-valuemin="0" aria-valuemax="100" style="--value: 67"></div>

<a id="youtube" href="https://www.youtube.com/watch?v=aXmNG2wie7I" target="_blank">
  <span>See how this demo was coded</span>
</a>
@keyframes progress {
  0% { --percentage: 0; }
  100% { --percentage: var(--value); }
}

@property --percentage {
  syntax: '<number>';
  inherits: true;
  initial-value: 0;
}

[role="progressbar"] {
  --percentage: var(--value);
  --primary: #369;
  --secondary: #adf;
  --size: 300px;
  animation: progress 2s 0.5s forwards;
  width: var(--size);
  aspect-ratio: 1;
  border-radius: 50%;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
}

[role="progressbar"]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: conic-gradient(var(--primary) calc(var(--percentage) * 1%), var(--secondary) 0);
  mask: radial-gradient(white 55%, transparent 0);
  mask-mode: alpha;
  -webkit-mask: radial-gradient(#0000 55%, #000 0);
  -webkit-mask-mode: alpha;
}

[role="progressbar"]::after {
  counter-reset: percentage var(--value);
  content: counter(percentage) '%';
  font-family: Helvetica, Arial, sans-serif;
  font-size: calc(var(--size) / 5);
  color: var(--primary);
}

/* demo */
body {
  margin: 0;
  display: grid;
  place-items: center;
  height: 100vh;
  background: #f0f8ff;
}


/***/

#youtube {
  z-index: 2;
  display: block;
  width: 100px;
  height: 70px;
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: red;
  border-radius: 50% / 11%;
  transition: transform 0.5s;
}

#youtube:hover,
#youtube:focus {
  transform: scale(1.1);
}

#youtube::before {
  content: "";
  display: block;
  position: absolute;
  top: 7.5%;
  left: -6%;
  width: 112%;
  height: 85%;
  background: red;
  border-radius: 9% / 50%;
}

#youtube::after {
  content: "";
  display: block;
  position: absolute;
  top: 20px;
  left: 40px;
  width: 45px;
  height: 30px;
  border: 15px solid transparent;
  box-sizing: border-box;
  border-left: 30px solid white;
}

#youtube span {
  font-size: 0;
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

External CSS

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External JavaScript

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