He saves $200 (the amount of change over the original amount $500
200/500 = 2/5 and 2/5 = 40% (divide 2 by 5 and get .4 which = 40%)
40% discount is the answer to your question
It would be .345% because to change it to a percent all you have to do is move the decimal point two places to the right.
Answer:
Its a i just took the test
Step-by-step explanation: