First of all: great job with Smart Keyboard, and the very useful autotext feature. I use it to replace my great Keytext software on Windows. Developer(s): be assured you have a good bunch of enthusiasts supporting you.
Autotext seems to have a problem with the % (percent) sign. The text
Hmm.. I'm not having his issue. Typed in exactly what you said and it's working fine. Can you check your custom auto text and see if that has accidentally been added?