Enrollment in City College in 1980 was 25 percent of enrollment in 1990. What was the percent increase in the college’s enrollment from 1980 to 1990? Select the correct option
A) 100%
B) 300 %
C) 200%
D) 250%
E) 183 1/3%
Assume 100 enrollments present in 1990   25 % of 1990 = enrollments on 1980   enrollments on 1980 = 25   % change = (enrollment in 1990 - enrollment in 1980)*100/(enrollment in 1980)   =(100 - 25) *100 / 25   = 7500 / 25= 
<gadget id="calculator">7500 / 25</gadget>
<output>300</output>
300 %   Ans - 300 %
<result>B</result>
Enrollment in City College in 1980 was 25 percent of enrollment in 1990. What was the percent increase in the college’s enrollment from 1980 to 1990?