Question 835245
The discount is $200 - $175 = $25.
As a fraction of $200, that $25 discount is {{{25/200}}} .
The ratio {{{25/200=0.125}}} is the same as {{{12.5/100}}} , 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 {{{25/200}}} {{{0.125/1}}} and {{{12.5/100}}} are the same.
Your teacher may say that if the percentage is {{{"x %"}}} you write the proportion
{{{x/100=25/200}}} and solve for {{{x}}} .
The result is the same.