I give between 27%-30% of my monthly salary to my parents.

I earn around $3500(before cpf deduction), mean I give around $1000+/-$200.

If my parents need medical care I also sponsor them on top of the monthly $1000.
I also sponsor them the angbao $$ sometimes when they attend relatives wedding dinner.
I also sponsor them the whitegold $$ sometimes when they attend relatives funeral.

I also give them about 30% of my AWS(bonus) during CNY.

I pay my own university fee about $24000.
I pay for my own HP bill/transportation.
I pay for my own when getting a driving license.

Parent pay for utility bill for the whole household about $100/mth.
Parent pay for internet bill about $25/mth.

During my university days, parents only give me allowance total of about $2400 for the duration of 4 years course. If I need $ to buy lecture note/meals/other entertainment, I use my saving which I save up during NS.