Answer: 56.18
Step-by-step explanation: if you know about the line equals line method, that should be able to help.
224.75 25%
----------------=-----------------
899 100%
you then cross multiply 899 and 25 then divide it by 100.
that will be the drop per 1 year so than divide 224.75 with 4 and then your answer should be 56.18
