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Amount increase = 64  36 = ?
Increase as compared to original amt
= ?/36 (and not "?/64", bcos 64 is not the original amt)
% increase = ?/36 x 100% =
2.
[pretty obvious the ans can either be
A or D, bcos it is a drop/decrease in enrolment; let's find out! ]
No. dropped = 612  489 = ?
Decrease as compared to original no.
= ?/612 (and not "?/489", bcos 489 is not initial no.)
hence,
% decrease = ?/612 x 100% =
& since it is a percentage decrease,
need to put a negative sign to the percentage.
ans: A
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