.ngpercentdisplay {
    background-color: #606060;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
    float: left;
    margin: 10px;
    font-size: 24px;
}
.ngpercentdisplay > div {
    float: left;
    width: 50%;
    height: 100%;
    position: relative;
    overflow: hidden;
}
.ngpercentdisplay span {
    background-color: #DADADA;
    display: block;
    width: 100%;
    height: 100%;
}
    .ngpercentdisplay .ngperdispleft span {
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
        -webkit-transform-origin: 100% 50%;
        -moz-transform-origin: 100% 50%;
        -ms-transform-origin: 100% 50%;
        transform-origin: 100% 50%;
    }
    .ngpercentdisplay .ngperdispright span {
        border-top-left-radius: 0;
        border-bottom-left-radius: 0;
        -webkit-transform-origin: 0% 50%;
        -moz-transform-origin: 0% 50%;
        -ms-transform-origin: 0% 50%;
        transform-origin: 0% 50%;
    }
.ngpercentdisplay:before,
.ngpercentdisplay:after {
    border-radius: 50%;
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translateX(-50%) translateY(-50%);
    -moz-transform: translateX(-50%) translateY(-50%);
    -ms-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
}
    .ngpercentdisplay:before {
        background-color: #FFFFFF;
        content: "";
        width: 60%;
        height: 60%;
        z-index: 100;
    }
    .ngpercentdisplay:after {
        content: attr(data-percent) "%";
        font-family: Arial, sans-serif;
        font-weight: bold;
        z-index: 200;
        text-align: center;
    }