Show fuzzyness amount in percentage terms, not out of the rather-arbitrary 400.

diffoscope/comparators/utils/container.py

@@ -164,10 +164,8 @@ class Container(metaclass=abc.ABCMeta):
             for my_name, other_name, score in self.perform_fuzzy_matching(
                 my_members, other_members
             ):
-                comment = (
-                    "Files similar despite different names"
-                    " (score: {}, lower is more similar)".format(score)
-                )
+                score_display = score / 400.0 * 100
+                comment = f"Files {score_display:.0f}% similar despite different names"
                 if score == 0:
                     comment = "Files identical despite different names"
                 yield prep_yield(my_name, other_name, comment)