// ID,Sprite_Name,kROName,iROName,LV,HP,SP,EXP,JEXP,Range1,ATK1,ATK2,DEF,MDEF,STR,AGI,VIT,INT,DEX,LUK,Range2,Range3,Scale,Race,Element,Mode,Speed,aDelay,aMotion,dMotion,MEXP,MVP1id,MVP1per,MVP2id,MVP2per,MVP3id,MVP3per,Drop1id,Drop1per,Drop2id,Drop2per,Drop3id,Drop3per,Drop4id,Drop4per,Drop5id,Drop5per,Drop6id,Drop6per,Drop7id,Drop7per,Drop8id,Drop8per,Drop9id,Drop9per,DropCardid,DropCardper
1516,INCREASE_SOIL,Increase Soil,Mi Gao,51,8230,0,2760,2110,1,560,700,30,12,40,45,23,12,69,12,10,12,1,0,62,0x91,445,106,1056,576,0,0,0,0,0,0,0,7264,4365,7004,2300,997,10,[i][b]969,1.3[/b][/i],0,0,0,0,0,0,0,0,0,0,4231,1
1884,MAVKA,Mavka,Mavka,63,19200,0,8301,6353,7,589,623,32,19,1,42,55,35,89,177,10,12,1,3,62,0x3885,170,1536,504,360,0,0,0,0,0,0,0,1572,5,629,300,707,300,710,50,747,2000,[i][b]748,500[/b][/i],510,3000,0,0,0,0,0,0
The drop rates are the difference.
748 has a initial rate of 500, and 969 has an initial rate of 1.3 it appears, your 75 times multiplier only multiplies those values.