SOURCE

<svg width="250" height="250" viewBox="0 0 250 250" class="circular-progress">
  <circle class="bg"></circle>
  <circle class="fg"></circle>
</svg>

body {
  height: 80vh;
  display: grid;
  place-items: center;
}

.circular-progress {
  --size: 250px;
  --half-size: calc(var(--size) / 2);
  --stroke-width: 20px;
  --radius: calc((var(--size) - var(--stroke-width)) / 2);
  --circumference: calc(var(--radius) * pi * 2);
  --dash: calc((var(--progress) * var(--circumference)) / 100);
  animation: progress-animation 5s linear 0s 1 forwards;
}

.circular-progress circle {
  cx: var(--half-size);
  cy: var(--half-size);
  r: var(--radius);
  stroke-width: var(--stroke-width);
  fill: none;
  stroke-linecap: round;
}

.circular-progress circle.bg {
  stroke: #ddd;
}

.circular-progress circle.fg {
  transform: rotate(-90deg);
  transform-origin: var(--half-size) var(--half-size);
  stroke-dasharray: var(--dash) calc(var(--circumference) - var(--dash));
  transition: stroke-dasharray 0.3s linear 0s;
  stroke: #5394fd;
}

@property --progress {
  syntax: "<number>";
  inherits: false;
  initial-value: 0;
}

@keyframes progress-animation {
  from {
    --progress: 0;
  }
  to {
    --progress: 100;
  }
}