diff --git a/packages/ketcher-react/src/components/MonomerPreview/AmbiguousMonomerPreview/AmbiguousMonomerPreview.tsx b/packages/ketcher-react/src/components/MonomerPreview/AmbiguousMonomerPreview/AmbiguousMonomerPreview.tsx
index 8b0b95419f..94ae1c29db 100644
--- a/packages/ketcher-react/src/components/MonomerPreview/AmbiguousMonomerPreview/AmbiguousMonomerPreview.tsx
+++ b/packages/ketcher-react/src/components/MonomerPreview/AmbiguousMonomerPreview/AmbiguousMonomerPreview.tsx
@@ -78,6 +78,16 @@ const UnstyledAmbiguousMonomerPreview = ({ className, preview }: Props) => {
         return b.ratio - a.ratio;
       }
     });
+    if (!isAlternatives) {
+      const overallRatio = sortedData.reduce(
+        (acc, item) => acc + (item.ratio || 1),
+        0,
+      );
+
+      sortedData.forEach((entry) => {
+        entry.ratio = Math.round(((entry.ratio || 1) / overallRatio) * 100);
+      });
+    }
 
     return sortedData.slice(0, 5);
   }, [previewData, isAlternatives]);