Can someone please explain how to solve the question below:

Zoo Research Northern Region Animal Neflem Aucten Filsten Kemtern Congtin Lion 34 45 2 52 235 Tiger 32 236 84 412 Zebra 104 214 74 78 524 Giraffe 123 40 8 45 124 Other 78 112 28 25 108 If the number of Giraffes at Congtin were reduced by 63%, what would the approximate ratio of Giraffes to animals in the 'Other' category be? A 1:2 B 1:3 C 2:3 D 3:7 E 8:11