I have just turned on Photoshop and my Curves Dialogue Box is now, all of a sudden, registering colors in terms of percentages rather than on a scale of 1 - 255 as it used to. I am in RGB color (that was my first thought - perhaps the image was in a different mode) and I have checked the Preferences but I can't find anything there. I didn't change anything either. I am rather puzzled as to how this could have happened and it is rather tedious trying to work out that 80% red is the same as 204. Does anyone have any ideas?