Share of Total in JavaScript

var options = {
  series: [
    {
      name: 'Chrome',
      data: [64, 65, 63, 62, 60, 58, 56],
    },
    {
      name: 'Safari',
      data: [16, 17, 19, 20, 22, 24, 25],
    },
    {
      name: 'Edge',
      data: [3, 5, 7, 9, 11, 12, 14],
    },
    {
      name: 'Firefox',
      data: [10, 9, 8, 6, 5, 4, 3],
    },
    {
      name: 'Other',
      data: [7, 4, 3, 3, 2, 2, 2],
    },
  ],
  chart: {
    type: 'streamgraph',
    height: 380,
  },
  colors: ['#0EA5E9', '#22C55E', '#F97316', '#EF4444', '#14B8A6'],
  plotOptions: {
    streamgraph: {
      // Each column normalized to its own total, so the chart reads as
      // composition over time rather than volume.
      offset: 'expand',
      order: 'inverse',
    },
  },
  title: {
    text: 'Share of page views by browser',
    align: 'left',
  },
  subtitle: {
    text: 'Illustrative data. Every column is 100% tall, so only the mix moves.',
    align: 'left',
  },
  xaxis: {
    categories: ['2019', '2020', '2021', '2022', '2023', '2024', '2025'],
  },
}

var chart = new ApexCharts(document.querySelector('#chart'), options)
chart.render()