Do you want your guage to have the total range from -100 % to 100% ? The guage image shows 0% to 25% but the min and max values in your gauge settings show -1 and 1 respectively. With that in mind, you can make the Segment 1 lower bound = -1 , Segment 2 lower bound = -0.25 and Segment 3 lower bound = 0.25. (See attached image)