diff --git a/public/typo3conf/ext/ep_products/Classes/Controller/AjaxContingentController.php b/public/typo3conf/ext/ep_products/Classes/Controller/AjaxContingentController.php
index 1e36d0d7..50437768 100644
--- a/public/typo3conf/ext/ep_products/Classes/Controller/AjaxContingentController.php
+++ b/public/typo3conf/ext/ep_products/Classes/Controller/AjaxContingentController.php
@@ -127,7 +127,7 @@ class AjaxContingentController extends ActionController
             $paxAvaiable = $event->getAvailable();
 
             if ($paxTotal > 0) {
-                $percentageBooked = round($paxAvaiable / $paxTotal * 100);
+                $percentageBooked = 100 - round($paxAvaiable / $paxTotal * 100);
             } else {
                 $percentageBooked = 100;
             }