This demo uses imperative chart updates. The generated code is a faithful Angular translation: open it in CodeSandbox to run and tweak.

import { Component, AfterViewInit, OnDestroy, ViewChild } from '@angular/core';
import {
  ChartComponent,
  ApexAxisChartSeries,
  ApexNonAxisChartSeries,
  ApexChart,
  ApexXAxis,
  ApexYAxis,
  ApexTitleSubtitle,
  ApexDataLabels,
  ApexStroke,
  ApexFill,
  ApexLegend,
  ApexTooltip,
  ApexMarkers,
  ApexPlotOptions,
  ApexResponsive,
  ApexGrid,
  ApexAnnotations,
  ApexStates,
  ApexTheme,
  NgApexchartsModule,
} from 'ng-apexcharts';

export type ChartOptions = {
  series?: ApexAxisChartSeries | ApexNonAxisChartSeries;
  chart?: ApexChart;
  xaxis?: ApexXAxis;
  yaxis?: ApexYAxis | ApexYAxis[];
  title?: ApexTitleSubtitle;
  subtitle?: ApexTitleSubtitle;
  dataLabels?: ApexDataLabels;
  stroke?: ApexStroke;
  fill?: ApexFill;
  legend?: ApexLegend;
  tooltip?: ApexTooltip;
  markers?: ApexMarkers;
  plotOptions?: ApexPlotOptions;
  responsive?: ApexResponsive[];
  grid?: ApexGrid;
  annotations?: ApexAnnotations;
  states?: ApexStates;
  theme?: ApexTheme;
  colors?: string[];
  labels?: any;
};

@Component({
  selector: 'app-chart',
  standalone: true,
  imports: [NgApexchartsModule],
  templateUrl: './chart.component.html',
})
export class AppChart implements AfterViewInit, OnDestroy {
  @ViewChild('chart') chart!: ChartComponent;
  public chartOptions: Partial<ChartOptions> = {
          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: (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: (val) => {
                return val + '%'
              },
            },
          },
          title: {
            text: 'Monthly Inflation in Argentina, 2002',
            floating: true,
            offsetY: 330,
            align: 'center',
            style: {
              color: '#444',
            },
          },
        };
  ngAfterViewInit() {
    (window as any).ApexCharts.setLicense('APEX-eyJpc3N1ZURhdGUiOiIyMDI2LTA0LTE2IiwiZXhwaXJ5RGF0ZSI6IjIwNTItMDQtMTciLCJwbGFuIjoiZW50ZXJwcmlzZSIsImRvbWFpbnMiOlsiYXBleGNoYXJ0cy5jb20iLCIxMjcuMC4wLjEiXX0=');
  }

  ngOnDestroy() {
    // no cleanup needed
  }
}
Column with Data Labels - Angular Column Charts | ApexCharts.js | ApexCharts.js