filter the growth rate for current month, MySQL

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DROP TABLE IF EXISTS Lead;

CREATE TABLE Lead(leadId int(11) NOT NULL AUTO_INCREMENT,
  leadType varchar(99) DEFAULT NULL,
  leadName varchar(99) DEFAULT NULL,
  leadDate date DEFAULT NULL,
  PRIMARY KEY (leadId));

insert into Lead values
(15,'corporate','benz','2017-05-10'),
(14,'individual','fino','2017-05-05'),
(13,'individual','jubin','2017-04-30'),
(12,'corporate','chola','2017-06-16'),
(10,'corporate','Volvo','2017-03-31'),
(9,'individual','manoj','2017-06-16'),
(8,'individual','vijay','2017-06-16'),
(6,'corporate','CHS','2017-06-16'),
(5,'corporate','sastra','2017-06-16'),
(4,'individual','rajesh','2017-06-16'),
(3,'individual','karthi','2017-06-16'),
(2,'individual','vijo','2017-06-16'),
(1,'individual','suresh','2017-06-16');

SELECT Year, Month, Entry, 
       IF(@last_entry = 0, 0, ((entry - @last_entry) / entry) * 100) "Growth Rate",
       @last_entry := entry                  
FROM
      (SELECT @last_entry := 0) x,
      (SELECT YEAR(leadDate) Year, MONTH(leadDate) Month, COUNT(*) Entry
       FROM   Lead
       GROUP BY 1,2) y
;

DROP TABLE IF EXISTS Lead;


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