# Pie Chart Calculation Technique

The following figure shows the sales of

*Due North Inc.*for the year 2002-2003 and 2003-2004. It is also given that the share of North India in the total sales figure is 20% and 24% for the two respective years.â€‹

**â€‹**

The total sales for 2002-2003 is Rs 1202 crores and for 2003-2004, it is Rs 1381 crores.

Example

What is the percentage growth in the sales value of North India in 2003-2004 over the sales value of 2002-2003?

Solution

The normal way of doing this question is â€“
Sales value of North India in 2002-2003

= Rs 240.4 crores
Sales value of North India in 2003-2004

= Rs 331.4 crores
So, growth = Rs 91 crore
So, Percentage growth =

Alternatively, there are percentage increases in two factors of the given pie-charts, i.e., share is increasing from 20% to 24% and then the total sales value is increasing from Rs 1202 crores to Rs 1381 crores.

Percentage growth in share = 20%

Percentage growth in total value â‰… 15% approx.

So, 100 â†’ 20%â†‘ â†’ 120 â†’ 15%â†‘ â†’ 138, OR

100 â†’ 15%â†‘ â†’ 115 â†’ 20%â†‘ â†’ 138

So, net percentage growth = 38%