diff --git a/src/Spout/Common/Entity/Style/NumberFormat.php b/src/Spout/Common/Entity/Style/NumberFormat.php
index 33a167d..a82fb11 100644
--- a/src/Spout/Common/Entity/Style/NumberFormat.php
+++ b/src/Spout/Common/Entity/Style/NumberFormat.php
@@ -83,6 +83,9 @@ class NumberFormat
                 $this->setCurrencySymbol('$');
             }
         }
+        if ($type == self::TYPE_PERCENTAGE) {
+            $this->setCommas(false);
+        }
         return $this;
     }