diff --git a/lib/utils.ts b/lib/utils.ts
index 2ca823c..4031a4c 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -98,7 +98,7 @@ export const formatArticle = (
 });
 
 export const formatChangePercent = (changePercent?: number) => {
-    if (!changePercent) return '';
+    if (changePercent === undefined || changePercent === null) return '';
     const sign = changePercent > 0 ? '+' : '';
     return `${sign}${changePercent.toFixed(2)}%`;
 };