var options = {
  series: [
    {
      name: 'Inflation',
      data: [2.3, 3.1, 4.0, 10.1, 4.0, 3.6, 3.2, 2.3, 1.4, 0.8, 0.5, 0.2],
    },
  ],
  chart: {
    height: 350,
    type: 'bar',
  },
  plotOptions: {
    bar: {
      borderRadius: 10,
      dataLabels: {
        position: 'top', // top, center, bottom
      },
    },
  },
  dataLabels: {
    enabled: true,
    formatter: function (val) {
      return val + '%'
    },
    offsetY: -20,
    style: {
      fontSize: '12px',
      colors: ['#304758'],
    },
  },

  xaxis: {
    categories: [
      'Jan',
      'Feb',
      'Mar',
      'Apr',
      'May',
      'Jun',
      'Jul',
      'Aug',
      'Sep',
      'Oct',
      'Nov',
      'Dec',
    ],
    position: 'top',
    axisBorder: {
      show: false,
    },
    axisTicks: {
      show: false,
    },
    crosshairs: {
      fill: {
        type: 'gradient',
        gradient: {
          colorFrom: '#D8E3F0',
          colorTo: '#BED1E6',
          stops: [0, 100],
          opacityFrom: 0.4,
          opacityTo: 0.5,
        },
      },
    },
    tooltip: {
      enabled: true,
    },
  },
  yaxis: {
    axisBorder: {
      show: false,
    },
    axisTicks: {
      show: false,
    },
    labels: {
      show: false,
      formatter: function (val) {
        return val + '%'
      },
    },
  },
  title: {
    text: 'Monthly Inflation in Argentina, 2002',
    floating: true,
    offsetY: 330,
    align: 'center',
    style: {
      color: '#444',
    },
  },
}

var chart = new ApexCharts(document.querySelector('#chart'), options)
chart.render()
Column with Data Labels - JavaScript Column Charts | ApexCharts.js | ApexCharts.js