"you can convert the percent to a fraction or decimal. While you might need to subtract a percent from a percent when working in finance, if you are working on homework you more likely will come across problems where you need to subtract a percent from a whole number."
It will be easier to understand this using a venn diagram :
20:8, 130:52, 40:16, 190:76
The answer is true. A reflection is a translation over an axis