Kod:
<script language='javascript' >
function sendText() {
var txtValue = document.getElementById('txt').value;
document.getElementById('myDiv').innerText = txtValue;
}
</script>
<script type='text/javascript' language='javascript'>
function hesapla() {
var txt = parseInt(document.getElementById('txt').value);
var myDiv = parseInt(document.getElementById('myDiv').value);
var sonuc = Math.round(((( txt - myDiv ) * 100 ) / myDiv)*100)/100;
document.getElementById('sonuc').value = sonuc;
if(isNaN(sonuc))
document.getElementById('sonuc').value = 0;
}
</script> 
