diff --git a/src/wp-includes/formatting.php b/src/wp-includes/formatting.php
index cfc1e52130..82205744fe 100644
--- a/src/wp-includes/formatting.php
+++ b/src/wp-includes/formatting.php
@@ -111,17 +111,17 @@ function wptexturize($text, $reset = false) {
 			$dynamic[ '/\'(\d\d)"(?=\Z|[.,)}>\-\]]|' . $spaces . ')/' ] = $apos . '$1' . $closing_quote;
 		}
 
-		// '99 '99s '99's (apostrophe)  But never '9 or '999 or '99.0.
+		// '99 '99s '99's (apostrophe)  But never '9 or '99% or '999 or '99.0.
 		if ( "'" !== $apos ) {
-			$dynamic[ '/\'(?=\d\d(?:\Z|(?!\d|[.,]\d)))/' ] = $apos;
+			$dynamic[ '/\'(?=\d\d(?:\Z|(?![%\d]|[.,]\d)))/' ] = $apos;
 		}
 
 		// Quoted Numbers like "42" or '42.00'
 		if ( '"' !== $opening_quote && '"' !== $closing_quote ) {
-			$dynamic[ '/(?<=\A|' . $spaces . ')"(\d[\d\.\,]*)"/' ] = $opening_quote . '$1' . $closing_quote;
+			$dynamic[ '/(?<=\A|' . $spaces . ')"(\d[.,\d]*)"/' ] = $opening_quote . '$1' . $closing_quote;
 		}
 		if ( "'" !== $opening_single_quote && "'" !== $closing_single_quote ) {
-			$dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[\d\.\,]*)\'/' ] = $opening_single_quote . '$1' . $closing_single_quote;
+			$dynamic[ '/(?<=\A|' . $spaces . ')\'(\d[.,\d]*)\'/' ] = $opening_single_quote . '$1' . $closing_single_quote;
 		}
 
 		// Single quote at start, or preceded by (, {, <, [, ", -, or spaces.
diff --git a/tests/phpunit/tests/formatting/WPTexturize.php b/tests/phpunit/tests/formatting/WPTexturize.php
index 102c2a78ab..14048deac6 100644
--- a/tests/phpunit/tests/formatting/WPTexturize.php
+++ b/tests/phpunit/tests/formatting/WPTexturize.php
@@ -313,8 +313,8 @@ class Tests_Formatting_WPTexturize extends WP_UnitTestCase {
 				"word &#8217;99&#8217;s word",
 			),
 			array(
-				"according to our source, '33% of all students scored less than 50' on the test.", // Apostrophes and primes have priority over quotes
-				"according to our source, &#8217;33% of all students scored less than 50&#8242; on the test.",
+				"according to our source, '33 students scored less than 50' on the test.", // Apostrophes and primes have priority over quotes
+				"according to our source, &#8217;33 students scored less than 50&#8242; on the test.",
 			),
 		);
 	}
@@ -1060,12 +1060,12 @@ class Tests_Formatting_WPTexturize extends WP_UnitTestCase {
 				'word &#8220;4,242.00&#8221; word',
 			),
 			array(
-				"word '99's word", // Is this correct?
-				"word &#8216;99&#8217;s word",
+				"word '99's word",
+				"word &#8217;99&#8217;s word",
 			),
 			array(
 				"word '99'samsonite",
-				"word &#8216;99&#8217;samsonite",
+				"word &#8217;99&#8217;samsonite",
 			),
 		);
 	}
@@ -1340,6 +1340,10 @@ class Tests_Formatting_WPTexturize extends WP_UnitTestCase {
 				"word '999 word", // Does not match the apos pattern, should be opening quote.
 				"word &#8216;999 word",
 			),
+			array(
+				"word '99% word",
+				"word &#8216;99% word",
+			),
 			array(
 				"word '9 word",
 				"word &#8216;9 word",