I have 3 series of data; 1. A total figure (1500-2500) and two series of
percentages (0-100%).

I would like to show them all on the one chart but the scale sits far too
hight to see the percentages and they just look like straight lines. Is it
possible to have two different types of figures that are numerically far
apart scaled down to assist in reading? Any help would be appreciated.