A useful tool for the mathematically challenged

I can never get my head round percentages, but I've just come across this site. 

It gives it in words:

What is % of ?

is what percent of ?

What is the percentage increase/decrease from to ?

Very useful - now I don't need to try and remember if I'm supposed to be multiplying or dividing (and which number I'm to divide by what...)

Ah well, back to the admin...