Preloader question + dynamic text box

Hi,

I have placed this code into my action layer


percentage = Math.round((_root.getBytesLoaded()/_root.getBytesTotal())*100); 
tellTarget ("loader"){
 gotoAndPlay(Math.round((_root.getBytesLoaded()/_root.getBytesTotal())*100)); 
}

My problem is that my dynamic text box that will show the percentage doesn’t have the % symbol at the end how can I make this happen?

regards

Jon