A kind of color TV set, now 2400 yuan per set, 350 yuan lower than the original price, how much lower

A kind of color TV set, now 2400 yuan per set, 350 yuan lower than the original price, how much lower

2400/(2400+350)*100%=87.3%
About 13% reduction
2750*0.9=2475.
Maybe it's 10% off and the change has been erased