diff --git a/gym/models.py b/gym/models.py
index ac6c2f8..199c8ea 100644
--- a/gym/models.py
+++ b/gym/models.py
@@ -165,3 +165,12 @@ class Round(models.Model):
         null=True,
     )
     notes = models.TextField("notes", blank=True)
+
+    @property
+    def real_percentage(self):
+        theoretical_max = (
+            self.equipment.theoretical_maxs.filter(date__lte=self.session.start)
+            .order_by("-date")
+            .first()
+        )
+        return self.chosen_weight / theoretical_max.value * 100
diff --git a/gym/templates/gym/equipment.html b/gym/templates/gym/equipment.html
index ecb56f4..2a44764 100644
--- a/gym/templates/gym/equipment.html
+++ b/gym/templates/gym/equipment.html
@@ -2,7 +2,10 @@
 {% load humanize %}
 
 {% block title %}{{ equipment.name }} ({{ equipment.room.name }}){% endblock %}
-{% block h1 %}{{ equipment.name }} <small class="text-muted">({{ equipment.room.name }})</small>{% endblock %}
+{% block h1 %}
+    {{ equipment.name }}
+    <small class="text-muted">({{ equipment.room.name }})</small>
+{% endblock %}
 
 
 {% block content %}
@@ -49,7 +52,8 @@
                         {% for round in rounds %}
                             <a href="{% url 'round-edit' round.pk %}"
                                class="list-group-item list-group-item-action">{{ round.repetition_number }} répétitions
-                                &times; {{ round.chosen_weight }} {{ equipment.unit }}</a>
+                                &times; {{ round.chosen_weight }} {{ equipment.unit }}
+                                ({{ round.theoretical_max_percentage }}% -> {{ round.real_percentage }}%)</a>
                         {% endfor %}
                     </ul>
                 {% else %}
diff --git a/gym/templates/gym/session_detail.html b/gym/templates/gym/session_detail.html
index 223fc45..b0cca92 100644
--- a/gym/templates/gym/session_detail.html
+++ b/gym/templates/gym/session_detail.html
@@ -51,7 +51,8 @@
                         <a href="{% url 'round-edit' round.pk %}"
                            class="list-group-item list-group-item-action">{{ round.equipment.name }}
                             &ndash; {{ round.repetition_number }} répétitions
-                            &times; {{ round.chosen_weight }} {{ round.equipment.unit }}</a>
+                            &times; {{ round.chosen_weight }} {{ round.equipment.unit }}
+                            ({{ round.theoretical_max_percentage }}% -> {{ round.real_percentage }}%)</a>
                     {% endfor %}
                 </ul>
             {% else %}