It is unfortunate (because how do you interpret 100% faster) but a common interpretation of X% faster implies it takes x% less time than before. One easy way is to have chatgpt give a numeric example for a statement like this, and in all cases I tried it gives an example of sorts if the job took 100 seconds before it takes 10 seconds now (a 10x increase), and I'm assuming it is a representation of common usage based on how much data is used to train it.