Can someone fix the 1040 Schedule C car and truck expenses worksheet, item 9, as it is not accurately calculating my percent of business use? Showing 12% instead of 70%.

I got a new car and drove 873 miles in total. 605 of those miles were for business, so the percentage should be roughly 70%, however, my form for line 9 is saying it is 11.89% which is not correct.