I’m not sure I understand how you calculated this.

2.22 Would be -222%

50% of 1 can be calculated like 1 x 50 / 100 or simply 1 x 0.5

Same for 122% 1 x 1.22 = 1.22

From what the author says :

Users had to learn a new interface for every app they connected.

But with this, users will have to learn a new interface every time they open the page…