Answer:
0.6%
Step-by-step explanation:
[tex]x[/tex] is what percentage of [tex]y[/tex] ? Divide x by y. In this case, divide 1515 by 252525:
[tex]1515\div252525\approx0.006[/tex]
Now, multiply that number by 100 to get a percentage:
[tex]0.006\times100=0.6[/tex]
1515 is 0.6% of 252525.
Another example so it's more clear:
50 is what percent of 200?
[tex]50\div200=0.25\\0.25\times100=25[/tex]
25%