Finding percentage increase from a scale factor

[matheus]

Hi guys,

This question has me a bit stumped and I can't seem to find any methods on Google that would help me solve this:

The last part of the question asks me to find the value of the scale factor, which in this equation I believe is 1.8.

I know how to calculate percentage increases the normal way, but I have never come across this sort of questions before, I'm unsure of how I can use the scale factor to calculate the percentage increase of the figures recorded in the table :(

Can anyone give me a hint here?

Cheers for any help :D

 

[Ackbach]

Your image is not viewable. Could you please repost the image? Then we'd be much better able to help you out.