Hi Marygrace!
These are examples only

Example 1

If you have scored: accounts (90), business studies (92), English (88) and economics (94); total marks are 90+92+88+94=364, Percentage is: 91%
The effective percentage for BA (hons) English is 91%. You are not eligible for BA (hons) economics and BCom (hons)
For BA (hons) political science, your effective percentage is 91%-2.5% = 88.5%

Example 2

If you have scored: physics (96), chemistry (92), English (90) and mathematics (94); total marks are 96+92+90+94=372, Percentage is: 93%
The effective percentage for BCom (hons)/BA (hons) history is 93%-2.5%, 90.5%
BA (hons) English 93%, BA (hons) economics 93%-2.5%=90.5%
BSc (hons) maths 93%

Example 3

If you have scored: accounts (90), business studies (92), English (88) and home science (94); total marks are 90+92+88+94=364,Percentage is 91%.
The effective percentage for BCom (hons) 91 % BA(hons) English 91%
BA (hons) history 91%-2.5% (hons)= 88.5%

Example 4

If you have scored: accounts (90) business studies (92), English (88) and economics (94) and seeking admission to BCom programme. Total marks are 90+92+88+94=364. Percentage is 91%.
The effective percentage for BCom 91%
BA(programme) 91%-5%