Relative exp - how to delete exp bonus from mob level

[avertuss 48]

Hi. How can i delete that? 

>=15	130%
+14	128%
+13	126%
+12	124%
+11	122%
+10	120%
+9	118%
+8	116%
+7	114%
+6	112%
+5	110%
+4	108%
+3	106%
+2	104%
+1	102%
=	100%
-1	100%
-2	98%
-3	96%
-4	94%
-5	92%
-6	90%
-7	85%
-8	80%
-9	70%
-10	50%
-11	30%
-12	10%
-13	5%
<=-14	1%

 

I want to do the same exp from mob for example when i have 100 level or 110 and mob has 105. Any ideas?