diff --git a/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala b/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala
index ce16e050c56ed..66f7ba90140b5 100644
--- a/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala
+++ b/sql/core/src/main/scala/org/apache/spark/sql/sources/DataSourceStrategy.scala
@@ -65,7 +65,7 @@ private[sql] object DataSourceStrategy extends Strategy with Logging {
       logInfo {
         val total = t.partitionSpec.partitions.length
         val selected = selectedPartitions.length
-        val percentPruned = (1 - total.toDouble / selected.toDouble) * 100
+        val percentPruned = (1 - selected.toDouble / total.toDouble) * 100
         s"Selected $selected partitions out of $total, pruned $percentPruned% partitions."
       }