Also coerce percent number.

ticdesk_cmsstuff/templates/ticdesk_cmsstuff/event_snippet.html

@@ -43,7 +43,7 @@
    </p>
    <div class="progress">
     <div class="progress-bar" role="progressbar" style="min-width: 2em;width:{{ event.booked_percentage|coerce_max:100 }}%">
-     {{ event.booked_percentage }} %
+     {{ event.booked_percentage|coerce_max:100 }} %
     </div>
    </div>
    <p>