Edit in JSFiddle

$(function () {
    var makeSeriesConfig = function (values) {
        var max_value = null;
        values.forEach(function (v) {
            if (!max_value || max_value < v.value) {
                max_value = v.value;
            }
        });

        var padding = {
            name: 'padding',
            dataLabels: {
                enabled: false
            },
            data: [] //[0, {y: 20, color: 'white'}, {y: 30, color: 'white'}, {y: 40, color: 'white'}, {y: 50, color: 'white'}]
        };

        var centralPiece = {
            name: 'Value',
            data: [],
            dataLabels: {
                enabled: true,
            }
        }

        values.forEach(function (v) {
            var w = (max_value - v.value) / 2;
            padding.data.push({
                y: w,
                color: 'white'
            });
            
            centralPiece.data.push({
              y: v.value,
              name: v.name
            });
        });


        return [padding, centralPiece, padding]
    };

    var chart;
    $(document).ready(function () {
        chart = new Highcharts.Chart({
            chart: {
                renderTo: 'container',
                type: 'bar'
            },
            title: {
                text: 'Pseudo-funnel chart'
            },
            xAxis: {
                categories: ['Step 1', 'Step 2', 'Step 3', 'Step 4', 'Step 5']
            },
            yAxis: {
                gridLineWidth: 0,
                min: 0,
                title: {
                    text: 'Tutorial funnel'
                },
                labels: {
                    enabled: false
                }
            },
            legend: {
                enabled: false,
                backgroundColor: '#FFFFFF',
                reversed: true
            },
            tooltip: {
                formatter: function () {
                    if (this.series.name.indexOf('padding') != -1) {
                        return false;
                    } else {
                        return "Value: " + this.y;
                    }
                }
            },
            plotOptions: {
                series: {
                    color: '#FF9900',
                    stacking: 'percent',
                    shadow: false
                },
                bar: {
                    groupPadding: 0
                }
            },
            series: makeSeriesConfig([
                                        {name: 'Step 1', value: 300},
                                        {name: 'Step 2', value: 240},
                                        {name: 'Step 3', value: 70},
                                        {name: 'Step 4', value: 40},
                                        {name: 'Step 5', value: 10}
                                    ])
        });
    });

});

<script src="http://code.highcharts.com/highcharts.js"></script>

<div id="container" style="min-width: 400px; height: 400px; margin: 0 auto"></div>