Answer:
The answer is
![67\%](https://img.qammunity.org/2021/formulas/mathematics/college/pq9djjd3two7eup4mr2kso60cv94ao8k0q.png)
Explanation:
To find the percentage increase we use the formula
![Percentage \: change = (change)/(original \: \: quantity) * 100\%](https://img.qammunity.org/2021/formulas/mathematics/college/yk0069voakged9myjg5vu1uje3f24w2kqs.png)
From the question
The original value = 12
To find the change we subtract the smaller value from the larger one
That's
Change = 20 - 12 = 8
So the percentage increase is
![(8)/(12) * 100 \%\\ = (2)/(3) * 100\% \\ = 66.67\%](https://img.qammunity.org/2021/formulas/mathematics/college/1ac3g75i4y25y40mnum40i088bt0iuo0lv.png)
We have the final answer as
to the nearest whole number
Hope this helps you