Question

Find the absolute change and the relative change in the following case.

The number of daily newspapers in a country decreased from $2025$ in $1900$ to $1251$ in $2010$.

Answer 1

Finding the absolute change and relative change:

Given,

Population in $1900$ was $2025$

Population in $2010$ was $1251$

$\begin{array}{rcl}\mathrm{Absolute}\mathrm{change}& =& \mathrm{new}\mathrm{value}-\mathrm{old}\mathrm{value}\\ & =& 1251-2025\\ & =& -774\end{array}$

$\begin{array}{rcl}\mathrm{Relative}\mathrm{change}& =& \frac{\mathrm{absolute}\mathrm{value}}{\mathrm{old}\mathrm{value}}\times 100\\ & =& \frac{-774}{2025}\times 100\\ & =& -38\%\end{array}$

Hence, the relative change and absolute change of daily newspapers from $1900$ to $2010$ is $-38\%\mathrm{and}-774$ respectively.