Your oil needs to be changed every 3 months or 3000 mile. which ever comes first.
If the original quantity is A and the ecrease is p% then the quantity of the decrease itself is A*p/100 and the remaining quantity is A - A*p/100
~65.385% is the decrease of percentage from 26 to 9.
The percentage of decrease from 421 to 293 is about 30.4%.
percentage of decrease = amount of decrease divided b the original amount and then multiply.
The percentage decrease from 140 to 80 would be -42.8%
30% decrease.
A 20% decrease.
This is a 35.9% decrease.
0.8739% decrease.
It is a 22.5806% decrease.
This is a 41.7808% decrease.
An 11.5607% decrease.