Changing canvas size

Hello all!

For the past version or two Photoshop changed the way a size can be changed. The default used to be that you just say the new canvas size, and it sets to the new number. Now it asks for the difference between the current size and the one you want. Which requires a ridiculous amount of math to get to the exact decimal point you need. There’s gotta be a way to set it back to simply state the desired new canvas size, right?? Anybody know how to do that?

(Also how to default it to be in inches vs. pixels.)

Thanks!