Calculate percentage saved between two numbers?

Question

I have two numbers, the first, is the original price, the second, is the discounted price.

I need to work out what percentage a user saves if they

Answer 1

100% - discounted price / full price

Answer 2

I know this is fairly old but I figured this was as good as any to put this. I found a post from yahoo with a good explanation:

Let's say you have two numbers, 40 and 30.  

  30/40*100 = 75.
  So 30 is 75% of 40.  

  40/30*100 = 133. 
  So 40 is 133% of 30. 

The percentage increase from 30 to 40 is:  
  (40-30)/30 * 100 = 33%  

The percentage decrease from 40 to 30 is:
  (40-30)/40 * 100 = 25%. 

These calculations hold true whatever your two numbers.

Original Post

Answer 3

If total no is: 200 and getting 50 number

then take percentage of 50 in 200 is:

(50/200)*100 = 25%