Given,

88.25% of 450= ?% of 530

It can aslo be approximated as,

88% of 450 =?% of 530

= 88×450=?×530

= $\frac{88\times 450}{530}$=? (or) ?= $\frac{3960}{53}$

= 74.71= 75

Hence, Option C is correct.