HP bar using sprites (No canvas)

Hello, I've been searching online but wasn't able to find an answer.

How do you create and calculate a Health bar using just sprites (No image fill from the canvas).

Basically i want stretch the sprite based on the amount of HP i have. Lets say i have 100HP; I want the sprite to stretch accordingly to the amount.

I'm able to make an HP bar using the Canvas but i want to do it with sprites. Thanks.