Dear sedhurajan

Yes definitely you can change password for your email account you just have to follow some basic process as mentioned below:-

• Open your email in your mobile app or through Google. 
• Go to setting. 
• Click on manage your account in settings. 
• Go to security option mentioned there. 
• Click on password and type your new password and confirm it. 

Just follow these basic process and get your password change. 

Good luck :)

Feel free to ask if you have any further queries.