diff --git a/Rs.DeweyTester/FormMain.cs b/Rs.DeweyTester/FormMain.cs
index 1f1088b..6b283d2 100644
--- a/Rs.DeweyTester/FormMain.cs
+++ b/Rs.DeweyTester/FormMain.cs
@@ -285,7 +285,7 @@ namespace Rs.MotionPlat
                 lblTotalNum.Text=totalNum.ToString();
                 lblPassNum.Text = passNum.ToString();
                 lblNgNum.Text = ngNum.ToString();
-                lblTotalYield.Text = $"{(passNum / totalNum) * 100}%";
+                lblTotalYield.Text = $"{(((double)((double)passNum / totalNum)) * 100).ToString("0.00")}%";
             };
         }
         
@@ -668,6 +668,11 @@ namespace Rs.MotionPlat
                 TestFixtureManager.Instance.GetTestFixture(4).ClearData();
                 TestFixtureManager.Instance.GetTestFixture(5).ClearData();
                 TestFixtureManager.Instance.GetTestFixture(6).ClearData();
+                lblTotalNum.Text = "0";
+                lblPassNum.Text = "0";
+                lblNgNum.Text = "0";
+                lblTotalYield.Text = "";
+
             }
         }