Update ProductPriceTest.php for Static Test

Author: aasim110

dev/tests/api-functional/testsuite/Magento/GraphQl/Catalog/ProductPriceTest.php

@@ -1229,9 +1229,11 @@ private function assertPrices($expectedPrices, $actualPrices, $currency = 'USD')
                 self::EPSILON
             );
             $this->assertEqualsWithDelta(
-                $expected['discount']['percent_off'], 
+                $expected['discount']['percent_off'],
                 round(
-                    ($actual['regular_price']['value'] - round($actual['final_price']['value'], 2)) * 100 / $actual['regular_price']['value'],
+                    (
+                        $actual['regular_price']['value'] - round($actual['final_price']['value'], 2)
+                    ) * 100 / $actual['regular_price']['value'],
                     2
                 ),
                 self::EPSILON