Index: lib/redmine/helpers/gantt.rb
===================================================================
--- lib/redmine/helpers/gantt.rb	(révision 1433)
+++ lib/redmine/helpers/gantt.rb	(copie de travail)
@@ -335,7 +335,7 @@
           options[:g_width] ||= (self.date_to - self.date_from + 1) * options[:zoom]
 
           coords = coordinates(version.start_date, version.due_date, version.completed_pourcent, options[:zoom])
-          label = "#{h version } #{h version.completed_pourcent.to_i.to_s}%"
+          label = "#{h version } #{h version.completed_pourcent.to_f.round}%"
           label = h("#{version.project} -") + label unless @project && @project == version.project
 
           case options[:format]