diff --git a/src/main/java/com/example/demo/app/domain/service/impl/AnalysisServiceImpl.java b/src/main/java/com/example/demo/app/domain/service/impl/AnalysisServiceImpl.java
index d0f3388..0764d41 100644
--- a/src/main/java/com/example/demo/app/domain/service/impl/AnalysisServiceImpl.java
+++ b/src/main/java/com/example/demo/app/domain/service/impl/AnalysisServiceImpl.java
@@ -33,7 +33,9 @@ public class AnalysisServiceImpl implements AnalysisService {
 	public AnalysisModel getAnalysis(Long userId) {
 		
 		// ユーザー情報取得、月別使用可能資金取得
-		UserEntity userEntity = userRepository.findById(userId).orElseThrow();
+		UserEntity userEntity = userRepository.findById(userId).orElseThrow(() ->
+        new RuntimeException(
+                "User not found."));
 		
 		// コースID取得
 		Long courseId = userEntity.getCourseEntity().getCourseId();
diff --git a/src/main/resources/templates/analysis.html b/src/main/resources/templates/analysis.html
index 55201dd..9f995ef 100644
--- a/src/main/resources/templates/analysis.html
+++ b/src/main/resources/templates/analysis.html
@@ -24,8 +24,8 @@
 					0
 				  </td>
 			      <td th:text="${analysisForm.totalDifferenceAmount >= 0}
-					      ? '+' + ${analysisForm.totalDifferenceAmount}
-						  : '-' + ${analysisForm.totalDifferenceAmount}"
+					      ? '＋' + ${analysisForm.totalDifferenceAmount}
+						  : ${analysisForm.totalDifferenceAmount}"
 				      th:class="${analysisForm.totalDifferenceAmount >= 0}
 					      ? 'color-danger;'
 						  : 'color-primary;'">
@@ -63,16 +63,16 @@
 		  
 	      <td>
 			<span th:text="${category.monthDifferenceAmount >= 0}
-			          ? '+' + ${category.monthDifferenceAmount}
-				      : '-' + ${category.monthDifferenceAmount}"
+			          ? '＋' + ${category.monthDifferenceAmount}
+				      : ${category.monthDifferenceAmount}"
 			      th:class="${category.monthDifferenceAmount >= 0}
 				      ? 'color-danger;'
 				  	  : 'color-primary;'">
 			</span>
 			<br>
 			<span th:text="${category.courseDifferenceAmount >= 0}
-				      ? '+' + ${category.courseDifferenceAmount}
-					  : '-' + ${category.courseDifferenceAmount}"
+				      ? '＋' + ${category.courseDifferenceAmount}
+					  : ${category.courseDifferenceAmount}"
 			      th:class="${category.courseDifferenceAmount >= 0}
 				      ? 'color-danger;'
 				      : 'color-primary;'">