voltage reversing

hi guys
i am in need of a way to convert a signal reading linear 0.3 - 4.8v dc on a throttle position sensor to read the opposite way around for an auto trans that req the sig to be 4.8 - 0.3v as the resistance changes
can this be done very simply or would it req a complex circuit if it can be done
thanks in advance
Jay

Just make a Inverting op amp buffer. See links.
http://hyperphysics.phy-astr.gsu.edu/Hbase/Electronic/opampvar.html
**broken link removed**

You also need to shift the output to the center point of the input (2.55V). See below.