Question

What is the percentage change when $64$ is increased to $144$.

Answer 1

Given that,

$64$ is increased to $144$.

To find out,

The percentage change.

We know that, percentage change $=\frac{newvalue-oldvalue}{oldvalue}\times 100$

$=\frac{144-64}{64}\times 100$

$=\frac{80}{64}\times 100$

$=\frac{5}{4}\times 100$

$=125\%$

Hence, the percentage change when $64$ is increased to $144$ is $125\%$.