diff --git a/src/main/java/com/biutag/supervision/util/ReportTrendUtil.java b/src/main/java/com/biutag/supervision/util/ReportTrendUtil.java
index adc5cee..119aed4 100644
--- a/src/main/java/com/biutag/supervision/util/ReportTrendUtil.java
+++ b/src/main/java/com/biutag/supervision/util/ReportTrendUtil.java
@@ -29,12 +29,13 @@ public class ReportTrendUtil {
     public static BigDecimal calcRate(int current, int prev) {
 
         if (prev == 0) {
-            return BigDecimal.ZERO;
+            return BigDecimal.ZERO.setScale(2, RoundingMode.HALF_UP);
         }
 
         return BigDecimal.valueOf(current - prev)
                 .divide(BigDecimal.valueOf(prev), 4, RoundingMode.HALF_UP)
-                .multiply(BigDecimal.valueOf(100));
+                .multiply(BigDecimal.valueOf(100))
+                .setScale(2, RoundingMode.HALF_UP);
     }
 
 
@@ -60,12 +61,13 @@ public class ReportTrendUtil {
     public static BigDecimal percent(int part, int total) {
 
         if (total == 0) {
-            return BigDecimal.ZERO;
+            return BigDecimal.ZERO.setScale(2, RoundingMode.HALF_UP);
         }
 
         return BigDecimal.valueOf(part)
                 .divide(BigDecimal.valueOf(total), 4, RoundingMode.HALF_UP)
-                .multiply(BigDecimal.valueOf(100));
+                .multiply(BigDecimal.valueOf(100))
+                .setScale(2, RoundingMode.HALF_UP);
     }
 
     /**
@@ -74,12 +76,13 @@ public class ReportTrendUtil {
     public static BigDecimal calcRate(BigDecimal current, BigDecimal prev) {
 
         if (prev == null || prev.compareTo(BigDecimal.ZERO) == 0) {
-            return BigDecimal.ZERO;
+            return BigDecimal.ZERO.setScale(2, RoundingMode.HALF_UP);
         }
 
         return current.subtract(prev)
                 .divide(prev, 4, RoundingMode.HALF_UP)
-                .multiply(BigDecimal.valueOf(100));
+                .multiply(BigDecimal.valueOf(100))
+                .setScale(2, RoundingMode.HALF_UP);
     }