I suck at maths, so this is probably a really stupid elementary question, but here it goes. 0.5 out of 1 is 50%, 1 out of 1 is 100%, 2 out of one is 200%,etc. So if that’s the case, 7 out of 1 is 700%, but, if something goes from a 1 to a 7, is that a 700% improvement or a 350% improvement?

In 3d modeling, Photoshop,etc. when you scale something by a 100%, you don’t do anything, you remain at “1 out of 1”, so by that logic a 7x improvement is 700%, however in real life people consider something that is “100% times better” to be twice as better, so 2 out of 1 in this case or 350% in the case of the seven, so which one is it?