Answer: The required percent change is 193.43%.
Step-by-step explanation: We are given to find the percent change of 13.7 to 40.2.
We know that
the percent change from x to y is given by
![P=(y-x)/(x)* 100\%.](https://img.qammunity.org/2019/formulas/mathematics/middle-school/pz13jiy53l0fcgvmcszvt0qmctkcopt4sx.png)
In the given question, we have
x = 13.7 and y = 40.2.
Therefore, the percent change from 13.7 to 40.2 is given by
![P=(40.2-13.7)/(13.7)*100\%=(26.5)/(13.7)*100\%=193.43\%.](https://img.qammunity.org/2019/formulas/mathematics/middle-school/y0k9czcc0sl8ap1feslcqvuy93705vyc2k.png)
Thus, the required percent change is 193.43%.