I've performed a study which yielded (?) the following results:

-                   no bike box      bike box     % change
correct procedure      173              55           -27%
incorrect procedure    68               50           69%

Since a result could only be one of the two - correct and incorrect procedure, do I need both quantities in my data, or should I just interpret one of them? If so, which one should I use, or does it depend what i'm trying to demonstrate?

Sorry for being so vague, but I hope this is enough to answer my question.