You can put this solution on YOUR website! The discount is $200 - $175 = $25.
As a fraction of $200, that $25 discount is .
The ratio is the same as , and that's 12.5%.
If you find the ratio as a decimal (as when dividing 25 by 200 to get 0.125), all you have to do is multiply that times 100 to get the percentage.
The ratios and are the same.
Your teacher may say that if the percentage is you write the proportion and solve for .
The result is the same.