diff --git a/game-app/game-core/src/main/java/games/strategy/triplea/odds/calculator/BattleCalculatorPanel.java b/game-app/game-core/src/main/java/games/strategy/triplea/odds/calculator/BattleCalculatorPanel.java
index 7d6a92d167d..4832e437b5e 100644
--- a/game-app/game-core/src/main/java/games/strategy/triplea/odds/calculator/BattleCalculatorPanel.java
+++ b/game-app/game-core/src/main/java/games/strategy/triplea/odds/calculator/BattleCalculatorPanel.java
@@ -677,7 +677,7 @@ private Territory findPotentialBattleSite() {
   }
 
   private static String formatPercentage(final double percentage) {
-    return new DecimalFormat("#%").format(percentage);
+    return new DecimalFormat("#%.##").format(percentage);
   }
 
   private static String formatValue(final double value) {