From c4c76d18b89267c2cac7b0dbfad56f8462cfc272 Mon Sep 17 00:00:00 2001
From: Maksym Novik <novik.kor@gmail.com>
Date: Sun, 5 May 2019 17:56:43 +0300
Subject: [PATCH] Tierprice can't save float percentage value #18651. Fixed
 invalid zeros trimming.

---
 app/code/Magento/Catalog/Pricing/Render/PriceBox.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/code/Magento/Catalog/Pricing/Render/PriceBox.php b/app/code/Magento/Catalog/Pricing/Render/PriceBox.php
index 3ec81683329bb..678b45ce97e7b 100644
--- a/app/code/Magento/Catalog/Pricing/Render/PriceBox.php
+++ b/app/code/Magento/Catalog/Pricing/Render/PriceBox.php
@@ -102,10 +102,16 @@ public function getCanDisplayQty(Product $product)
      * Format percent
      *
      * @param float $percent
+     *
      * @return string
      */
     public function formatPercent(float $percent): string
     {
-        return rtrim(number_format($percent, 2), '.0');
+        /*First rtrim - trim zeros. So, 10.00 -> 10.*/
+        /*Second rtrim - trim dot. So, 10. -> 10*/
+        return rtrim(
+            rtrim(number_format($percent, 2), '0'),
+            '.'
+        );
     }
 }