How to change google account password from Android Phone

Majority of the people using Android phone. Using Android phone without a google account is unbelievable. By google account we are using gmail, notes, contacts, phone backups, drive, YouTube and so on.
So you must have a google account in android phone. For the security purpose sometime we have to change our google account password and we use computer for this.
But we can easily change our google account password from our android mobile phone.
Here I am showing you a simple tricks.