Client script to Set percentage

Client-Side Components/Catalog Client Script/Percentage Symbol/readme.md

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+Sets the field value to the formatted percentage string (e.g., 45 becomes 45.00%).
+
+Retrieves the current value of the field.
+Removes any existing % symbol to avoid duplication.
+Validates the input to ensure it's a number.
+Converts the value to a float.
+Formats it to two decimal places and appends a % symbol. 

Client-Side Components/Catalog Client Script/Percentage Symbol/script.js

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+/*Sets the field value to the formatted percentage string (e.g., 45 becomes 45.00%).
+
+Retrieves the current value of the field.
+Removes any existing % symbol to avoid duplication.
+Validates the input to ensure it's a number.
+Converts the value to a float.
+Formats it to two decimal places and appends a % symbol. */
+
+
+function onChange(control, oldValue, newValue, isLoading) {
+   if (isLoading || newValue == '') {
+      return;
+   }
+
+   function formatPercent(value) {
+    if (value === null || value === undefined || value === '' || isNaN(value)) {
+        return "";
+    }
+    var num = parseFloat(value);
+    if (isNaN(num)) 
+	return "";
+    return num.toFixed(2) + "%";
+}
+var des_amount = g_form.getValue("<variable_name>").replace("%","");
+
+g_form.setValue("<variable_name>", formatPercent(des_amount));
+
+}