JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tbody>
        <tr data-index="0">
            <td class="small" style="">Sector</td>
            <td class="small" style="">Name</td>
            <td class="small" style="">Phone Number</td>
        </tr>
        <tr data-index="1">
            <td class="small" style="">Sector</td>
            <td class="small" style="">Name</td>
            <td class="small" style="">Phone Number</td>
        </tr>
        <tr data-index="2">
            <td class="small" style="">Sector</td>
            <td class="small" style="">Name</td>
            <td class="small" style="">Phone Number</td>
        </tr>
    </tbody>
</table>

JavaScript

$('tr').each(function (i) {
    var $this = $(this);
    var last = $this.find('td').last();
    var newTR = $('<tr/>').append(last);
    newTR.insertAfter($this);
});