450 is 75% of 600.
→ Why?
First of all, work out what 25% of 600 is.
25% of 600 is 150. Since 25% is 3 times smaller than 75%, the correct answer, you multiply 150 by 3 to get your answer.
And whaddya know! 150 × 3 = 450!
If 150 is 25% of 600, Now multiply 25% by 3 also to get what 450 is equal to.
25% × 3 = 75%
So, therefore, 450 is 75% of 600
↑ ↑ ↑ Hope this helps! :D