Question 760959
To solve this problem we can use a proportion, difference/original=x/100.
Here, the difference means the number of increase or decrease between the original number and the new number. To find the difference you subtract 19.68-16.65, and get 3.03.
The original means the number before the increase or decrease, and the x/100 part will help you find the percent.
DIFFERENCE:3.03
ORIGINAL:16.65
Now using the new found information, we can plug it in the proportion.
3.03       x        
----  =  ------
16.65     100 
From here you make an equation by cross multiplying, and get:
3.30(100)=16.65x  ======> 303=16.65x (solve for x)

Try solving the problem now. The answer you get, will be the percent, so no need to move any decimal over :)