php progress bar with percentage

The php progress bar with percentage varies by changing php variable value.

<?php $percentage='10%';?>

 
<style>
    .progress{
        border: 1px solid black;
        position:relative;
        width:500px;
    }
    .bar{
        background-color: #00ff00;
        position:absolute;
    }
    .percent{
        position:absolute;
        left:200px;
    }
</style>
<div class="progress">
    <div class="bar" style="width:<?php echo $percentage;?>">&nbsp;</div>
    <div class="percent"><?php echo  $percentage;?></div>
    &nbsp;
</div>