70% off $200 = $60. You save $140.
Equation: $200 − (70% × $200) = $200 − $140 = $60.
Another way to read it: you pay 30% of the original price — that's $60.
$60. The discount is $140 and the final price you pay is $60.
You pay $60 (before tax). That's $200 minus a $140 discount.