diff --git a/src/calibre/devices/kindle/driver.py b/src/calibre/devices/kindle/driver.py
index 4f78b2f98e..2653a3c461 100644
--- a/src/calibre/devices/kindle/driver.py
+++ b/src/calibre/devices/kindle/driver.py
@@ -448,12 +448,11 @@ class Bookmark():
             except:
                 pass
         elif self.bookmark_extension == 'pdr':
-            # Book length not yet implemented for PDF files
-            # After 0.6.45:
-            # from calibre import plugins
-            # self.book_length = plugins['pdfreflow'][0].get_numpages(open(book_fs).read())
-
-            self.book_length = 0
+            from calibre import plugins
+            try:
+                self.book_length = plugins['pdfreflow'][0].get_numpages(open(book_fs).read())
+            except:
+                pass
 
         else:
             print "unsupported bookmark_extension: %s" % self.bookmark_extension
diff --git a/src/calibre/gui2/ui.py b/src/calibre/gui2/ui.py
index 8db2a52a3c..4602f117fb 100644
--- a/src/calibre/gui2/ui.py
+++ b/src/calibre/gui2/ui.py
@@ -1013,9 +1013,10 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
                 spanTag = Tag(ka_soup, 'span')
                 spanTag['style'] = 'font-weight:bold'
                 if bookmark.book_format == 'pdf':
-                    spanTag.insert(0,NavigableString("%s<br />Last Page Read: %d" % \
+                    spanTag.insert(0,NavigableString("%s<br />Last Page Read: %d (%d%%)" % \
                                     (strftime(u'%x', timestamp.timetuple()),
-                                    last_read_location)))
+                                    last_read_location,
+                                    percent_read)))
                 else:
                     spanTag.insert(0,NavigableString("%s<br />Last Page Read: Location %d (%d%%)" % \
                                     (strftime(u'%x', timestamp.timetuple()),