Laravel -如何在chartjs饼图中同时显示计数和百分比(%)

<canvas id="pieChart"></canvas>

var ctx = document.getElementById('pieChart').getContext('2d');

var data = {
  labels: ['部分1', '部分2', '部分3'],
  datasets: [{
    data: [10, 20, 30],
    backgroundColor: ['#ff6384', '#36a2eb', '#ffce56']
  }]
};

var options = {
  tooltips: {
    callbacks: {
      label: function(tooltipItem, data) {
        var dataset = data.datasets[tooltipItem.datasetIndex];
        var total = dataset.data.reduce(function(previousValue, currentValue, currentIndex, array) {
          return previousValue + currentValue;
        });
        var currentValue = dataset.data[tooltipItem.index];
        var percentage = Math.floor(((currentValue / total) * 100) + 0.5);
        return currentValue + ' (' + percentage + '%)';
      }
    }
  }
};

var pieChart = new Chart(ctx, {
  type: 'pie',
  data: data,
  options: options
});