SAT Algebra Word Problems

Algebra Level 1

Katie and Beth had the same number of marbles on January 1st. By the end of the year, Katie's collection of marbles increased by $25\%$ and Beth's decreased by $75\%$ . On December 31st, the number of marbles Beth owned was what percent of the number of marbles Katie owned?

(A) $\ \ 18.75\%$
(B) $\ \ 20\%$
(C) $\ \ 33.33\%$
(D) $\ \ 75\%$
(E) $\ \ 100\%$