diff --git a/dist/main.js b/dist/main.js
index c738785b..a1cd21b6 100644
--- a/dist/main.js
+++ b/dist/main.js
@@ -6040,7 +6040,7 @@ function commentForMonorepo(
             el => el.packageName === lcovObj.packageName,
         );
 
-        const pbefore = baseLcov ? percentage(baseLcov) : 0;
+        const pbefore = baseLcov ? percentage(baseLcov.lcov) : 0;
         const pafter = baseLcov ? percentage(lcovObj.lcov) : 0;
         const pdiff = pafter - pbefore;
         const plus = pdiff > 0 ? "+" : "";
diff --git a/src/comment.js b/src/comment.js
index 8a43ce72..96ed1da0 100644
--- a/src/comment.js
+++ b/src/comment.js
@@ -18,7 +18,7 @@ export function commentForMonorepo(
             el => el.packageName === lcovObj.packageName,
         );
 
-        const pbefore = baseLcov ? percentage(baseLcov) : 0;
+        const pbefore = baseLcov ? percentage(baseLcov.lcov) : 0;
         const pafter = baseLcov ? percentage(lcovObj.lcov) : 0;
         const pdiff = pafter - pbefore;
         const plus = pdiff > 0 ? "+" : "";