diff --git a/README.md b/README.md
index acdd68a..eee3a3e 100644
--- a/README.md
+++ b/README.md
@@ -11,13 +11,13 @@ and Python 3.
 # Use
 
 ```bash
-python guetzli-recursively.py [folder]
+python3 guetzli-recursively.py [folder]
 ```
 
 ## Example
 
 ```bash
-python guetzli-recursively.py img
+python3 guetzli-recursively.py img
 ```
 
 out
diff --git a/guetzli-recursively.py b/guetzli-recursively.py
index 18fbe87..c196582 100644
--- a/guetzli-recursively.py
+++ b/guetzli-recursively.py
@@ -38,6 +38,6 @@ for dirpath, dirnames, files in walk(top_dir):
                         pass
                     # Move temp to source
                     rename(url_out, url)
-                    print('Save ' + str(100 - size_acurate) + '%')
+                    print('Save ' + str(round(100 - size_acurate, 2)) + '%')
                 else:
                     print('It is not necessary to optimize')