# Question 01cc9

Dec 16, 2016

It is a 71.4%  increase

#### Explanation:

Any change in an amount can be given as a percent (of itself).

For example a change from 8 to 16 could be said as

"The amount doubled" which is the same as saying:
"An increase of 100%"

A change from 8 to 4 could be said as:

"The amount halved" which is the same as saying
"A decrease of 50%"

A change can be an increase, decrease, profit, loss, markup, discount etc. Use the same method:

% "change" = "amount of change"/"original amount" xx 100%

In this case the change was from $42 \to 72$
This is an increase of $30$

% change = 30/42 xx 100%

=71.4%# increase