Fix bug in computation in other arc of pie chart in statistics module

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1492 44740490-163a-0410-bde0-09ae8108e29a

modules/statistics/www/showstats.php

@@ -220,8 +220,7 @@ foreach($topdelimiters AS $td) {
 	$sum += $summaryDataset[$td];
 	$piedata[] = number_format(100*$summaryDataset[$td] / $summaryDataset['_'], 2);
 }
-$piedata[] = number_format(100*($sum /$summaryDataset['_']), 2);
-
+$piedata[] = number_format(100 - 100*($sum /$summaryDataset['_']), 2);
 
 $datasets = array();