Raj scored 240 out of 300 in science and scored 369 out of 450 in mathematics. In which subject he showed better performance?

Raj's percentage score in Science = $\frac{240}{300}\times 100=80\%$
Raj's percentage score in Mathematics = $\frac{369}{450}\times 100=82$
A higher percentage score in Mathematics tells us that Raj did better in that subject.