Is my activity diagram correct for the algorithm?

Question

infographics

Algorithm:
1. Checking for an entry in the "Car Repair" section:
2.a. There is a record. 3.a.1
. If the record of the last repair has the entry “Major” in the “Type of repair” field, then the following calculation is carried out : .Go to step 4. 3.b.1 . If the record of the last repair has the entry “Current” in the “Type of repair” field, then the following calculation is carried out: item 4.
4. If the result in the calculation is greater than 3 but less than 9%, then the specified car is recorded in this column. If the result of the calculation is different, then go to the description in another column.
2.b. There is no entry.
2b.1. The following calculation is carried out:
The value of the actual mileage of the car from the date of commissioning to the current date / Normative value for current repairs
2b.2. Go to step 4