I trying to scale object up and back down, I can only use a scale factor to alter the size. I am currently scaling upwards by 1.2.
How do I calculate the scale factor I need to return the object to its' original 100%?
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$\begingroup$To settle this question: we always have the relation that if some object B is $p$ times larger than object A, then we can also say that object A is $\frac1{p}$ times the size of object B. In the OP's case, to undo the $\frac65 \times$ scale-up, a multiplication by $1/(6/5)=\frac56$ is needed.
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