FULL PRODUCT VERSION :
java version "9"
Java(TM) SE Runtime Environment (build 9+179)
Java HotSpot(TM) Server VM (build 9+179, mixed mode, emulated-client, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.14393]

A DESCRIPTION OF THE PROBLEM :
NumberFormat.getPercentInstance().parse(String) can not parse a percent value.

REGRESSION. Last worked in version 8u152

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the test program.


ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.text.ParseException: Unparseable number: "75%"
        at java.base/java.text.NumberFormat.parse(Unknown Source)
        at TestJava9.main(TestJava9.java:7)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.text.NumberFormat;
import java.text.ParseException;

public class TestJava9 {

    public static void main( String[] args ) throws ParseException {
        double value = NumberFormat.getPercentInstance().parse( "75%" ).doubleValue();
        System.out.println( value );
    }
}
---------- END SOURCE ----------