Hello,
The system is managed by the css, if you change the element, you can create a round rather a square
example about the square
span.ModulesFrontPageTickerBootstrapTickerPourcentage {
font: 700 14px/12px Arial,Helvetica,sans-serif;
color: #FFF;
background: #FF6600 none repeat scroll 0% 0%;
text-transform: uppercase;
padding: 0.375rem 0px 0.4375rem;
text-shadow: 1px 1px rgba(0, 0, 0, 0.24);
width: 3.125rem;
text-align: center;
display: block;
float:right;
position: relative;
right:1rem;
}