Symbol issue while downloading file

Question

Hi I am using below code for downloading html file

function saveAsFile() {
    var element = document.createElement('a');
    element.setAttribute('href', 'data:text/html;charset=utf-8,' +  
    encodeURIComponent(strFileContent));
    element.setAttribute('download', strFileName);
    element.style.display = 'none';
    document.body.appendChild(element);
    element.click();
    document.body.removeChild(element);
}

In the file content have £ symbol and while downloading the file its showing below £900.00

How to eliminate special symbol could you please help to resolve the issue