diff --git a/app/Service/Api/Order/ConfirmationOrderService.php b/app/Service/Api/Order/ConfirmationOrderService.php
index f6670b7..e68e245 100644
--- a/app/Service/Api/Order/ConfirmationOrderService.php
+++ b/app/Service/Api/Order/ConfirmationOrderService.php
@@ -72,7 +72,20 @@ class ConfirmationOrderService extends BaseOrderService
         foreach ($filtered as &$value) {
             $value['amount'] = match ($value['coupon_type']) {
                 CouponCode::COUPON_TYPE_INSTANT_REDUCTION => $value['amount'],
-                CouponCode::COUPON_TYPE_DISCOUNT => bcmul(bcsub("1", (string)$value['ratio'],2),(string)$orderMaxPrice,2),
+//                CouponCode::COUPON_TYPE_DISCOUNT => bcmul(bcsub("100", (string)$value['ratio'],2),(string)$orderMaxPrice,2),
+                CouponCode::COUPON_TYPE_DISCOUNT => bcmul(
+                    bcdiv(
+                        bcsub(
+                            "100",
+                            (string)$value['ratio'],
+                            2
+                        ),
+                        "100",
+                        2
+                    ),
+                    bcadd((string)max(array_column($this->orderRes['good'],'price')),(string)$this->orderRes['sundry_price'],2),
+                    2
+                ),
                 default => 0
             };