calculate % its wrong atm

Signed-off-by: Venom <https://github.com/VenomX>
Safety (fix crashes and possible ones) work to assignment 8.1
* also changed and fix average calculation for Report 2
* Report 3 percentage is still incorrect

Signed-off-by: Venom <https://github.com/VenomX>
*assignment 8.1 - finished
* duh cant get a decimal result by dividing two integers

Signed-off-by: Venom <https://github.com/VenomX>