fix undefined showing up on witnesses page

src/app/components/pages/Witnesses.jsx

@@ -301,15 +301,14 @@ class Witnesses extends React.Component {
                 `${totalVotesVests / 1000000} VESTS`
             );
             const totalVotesHp = formatLargeNumber(totalVotesHpf, 0);
+            const deltaHpf = previousTotalVoteHpf - totalVotesHpf;
 
             let requiredHpToRankUp = '';
             if (previousTotalVoteHpf !== 0) {
                 requiredHpToRankUp = (
                     <small>
                         {tt('witnesses_jsx.hp_required_to_rank_up', {
-                            votehp: formatLargeNumber(
-                                previousTotalVoteHpf - totalVotesHpf
-                            ),
+                            votehp: formatLargeNumber(deltaHpf),
                         })}
                     </small>
                 );

src/app/utils/ParsersAndFormatters.js

@@ -102,7 +102,7 @@ export function formatLargeNumber(number, decimals) {
     ];
 
     const regexp = /\.0+$|(\.[0-9]*[1-9])0+$/;
-    for (let i = symbols.length - 1; i > 0; i -= 1) {
+    for (let i = symbols.length - 1; i >= 0; i -= 1) {
         if (number >= symbols[i].value) {
             return (
                 (number / symbols[i].value)