diff --git a/modules/interventi/src/Components/Sessione.php b/modules/interventi/src/Components/Sessione.php
index f543e8395..59edb6e1c 100755
--- a/modules/interventi/src/Components/Sessione.php
+++ b/modules/interventi/src/Components/Sessione.php
@@ -401,7 +401,7 @@ class Sessione extends Model
      */
     public function getMarginePercentualeAttribute()
     {
-        return $this->imponibile ? (1 - ($this->spesa / $this->imponibile)) * 100 : 100;
+        return $this->imponibile ? (($this->imponibile / $this->spesa) - 1) * 100 : 100;
     }
 
     public function getIvaIndetraibileAttribute()
diff --git a/src/Common/Components/Accounting.php b/src/Common/Components/Accounting.php
index 7fad0d717..557db4f1a 100644
--- a/src/Common/Components/Accounting.php
+++ b/src/Common/Components/Accounting.php
@@ -321,7 +321,7 @@ abstract class Accounting extends Component
      */
     public function getMarginePercentualeAttribute()
     {
-        return $this->imponibile ? (1 - ($this->spesa / $this->imponibile)) * 100 : 100;
+        return $this->imponibile ? (($this->imponibile / $this->spesa) - 1) * 100 : 100;
     }
 
     /**
diff --git a/src/Common/Document.php b/src/Common/Document.php
index 0120e41b4..d376e1460 100755
--- a/src/Common/Document.php
+++ b/src/Common/Document.php
@@ -226,7 +226,7 @@ abstract class Document extends Model implements ReferenceInterface, DocumentInt
      */
     public function getMarginePercentualeAttribute()
     {
-        return $this->imponibile ? (1 - ($this->spesa / $this->totale_imponibile)) * 100 : 100;
+        return $this->imponibile ? (($this->totale_imponibile / $this->spesa) - 1) * 100 : 100;
     }
 
     public function delete()