Check the game options, first page near the bottom. It may be turned off. If you're seeing the lines but no %s, try clearing your cache. That will force WGT to send you new files.
FWIW, the Shot Pal doesn't have those percents for me but the Putter Pal does and I could see where, if the zoom function was used (right click), the numbers would disappear off the bottom of the screen.