Answer: 22.67%
Step-by-step explanation: To find the difference, we subtract the discounted price from the original price:
$749.99 - $579.99 = 170$ so the difference is 170$
To calculate the percentage discount, we divide the difference by the original price and multiply by 100:
($170 / $749.99) * 100 ≈ 22.67%
Therefore, the TV was discounted by 22.67%