Use maximum discount percentage from variants

Use maximum discount percentage from variants

snippets/product-tile.liquid

@@ -265,9 +265,23 @@
           <!-- discount percentage raw value is {{ percentage }} , {{ sale_text }} -->
           {% assign text = sale_text | replace: "[percentage]", percentage | replace: ".0", "" %}
         {% elsif compare_at_price > price %}
-          {% assign tmp_percentage = price | times: 1.0 | divided_by: compare_at_price | times: 100 | floor %}
+          {% assign max_discount = 0 %}
+
+          {% for variant in product.variants %}
+            {% if variant.compare_at_price > variant.price %}
+              {% assign discount = variant.compare_at_price | minus: variant.price %}
+              {% assign discount_percent = discount | times: 100.0 | divided_by: variant.compare_at_price | round %}
+              {% if discount_percent > max_discount %}
+                {% assign max_discount = discount_percent %}
+              {% endif %}
+            {% endif %}
+          {% endfor %}
+
+          {% comment %}
+          {% assign tmp_percentage = tmp_price_max | times: 1.0 | divided_by: tmp_compare_at_price_max | times: 100 | floor %}
           {% assign percentage = 100.0 | minus: tmp_percentage | floor %}
-          {% assign text = sale_text | replace: "[percentage]", percentage | replace: ".0", "" %}
+          {% endcomment %}
+          {% assign text = sale_text | replace: "[percentage]", max_discount | replace: ".0", "" %}
         {% endif %}
         
         {%- liquid