используйте код языка -> 'en-GB'
см. Следующий рабочий фрагмент ...
google.charts.load('current', {
packages: ['corechart'],
language: 'en-GB'
});
google.charts.setOnLoadCallback(drawStuff);
function drawStuff() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Country');
data.addColumn('number', 'GDP');
data.addRows([
['US', 16768100],
['China', 9181204],
['Japan', 4898532],
['Germany', 3730261],
['France', 2678455]
]);
var options = {
chartArea: {
left: 108
},
title: 'GDP of selected countries, in \u00A3pounds',
width: 500,
height: 300,
legend: 'none',
bar: {
groupWidth: '95%'
},
vAxis: {
format: "currency",
gridlines: {
count: 4
}
}
};
var chart = new google.visualization.ColumnChart(document.getElementById('number_format_chart'));
chart.draw(data, options);
};
<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="number_format_chart"></div>