Creating a Database, User, and Granting Privleges

I always for get how to creat a database, user, and granting privileges to the new user for that database:

 > CREATE DATABASE new_db;
 Query OK, 1 row affected (0.02 sec)
 
 > CREATE USER 'new_user'@'localhost' IDENTIFIED BY 'password';
 Query OK, 0 rows affected (0.03 sec)
 
 > CREATE USER 'new_user'@'%' IDENTIFIED BY 'password';
 Query OK, 0 rows affected (0.03 sec)
 
 > GRANT ALL PRIVILEGES ON 'new_db'.* TO 'new_user'@'localhost' IDENTIFIED BY 'password';
 Query OK, 0 rows affected (0.03 sec)
 
 > GRANT ALL PRIVILEGES ON 'new_db'.* TO 'new_user'@'%' IDENTIFIED BY 'password';
 Query OK, 0 rows affected (0.03 sec)
  

Privileges