Highcharts.chart('container', {

    title: {
        text: 'Y axis floor is 0'
    },

    xAxis: {
        categories: [
            'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
            'Oct', 'Nov', 'Dec'
        ]
    },

    yAxis: {
        floor: 0,
        ceiling: 100,
        title: {
            text: 'Percentage'
        }
    },

    series: [{
        data: [0, 1, 0, 2, 3, 5, 8, 5, 15, 14, 25, 54]
    }]
});