diff --git a/pkg/controller/deployment/sync.go b/pkg/controller/deployment/sync.go
index b5c67a9e1bc..acc90d2afc7 100644
--- a/pkg/controller/deployment/sync.go
+++ b/pkg/controller/deployment/sync.go
@@ -417,13 +417,14 @@ func (dc *DeploymentController) scaleReplicaSet(ctx context.Context, rs *apps.Re
 	scaled := false
 	var err error
 	if sizeNeedsUpdate || annotationsNeedUpdate {
+		oldScale := *(rs.Spec.Replicas)
 		rsCopy := rs.DeepCopy()
 		*(rsCopy.Spec.Replicas) = newScale
 		deploymentutil.SetReplicasAnnotations(rsCopy, *(deployment.Spec.Replicas), *(deployment.Spec.Replicas)+deploymentutil.MaxSurge(*deployment))
 		rs, err = dc.client.AppsV1().ReplicaSets(rsCopy.Namespace).Update(ctx, rsCopy, metav1.UpdateOptions{})
 		if err == nil && sizeNeedsUpdate {
 			scaled = true
-			dc.eventRecorder.Eventf(deployment, v1.EventTypeNormal, "ScalingReplicaSet", "Scaled %s replica set %s to %d", scalingOperation, rs.Name, newScale)
+			dc.eventRecorder.Eventf(deployment, v1.EventTypeNormal, "ScalingReplicaSet", "Scaled %s replica set %s to %d from %d", scalingOperation, rs.Name, newScale, oldScale)
 		}
 	}
 	return scaled, rs, err