Once the court determines that that there has been a change in circumstances the court is entitled to re-assess the needs of the children as a result of change in circumstances and embark on a fresh inquiry as to the appropriate amount of child support. See Willick v. Willick 1994 CanLII 28 (SCC),  3 S.C.R. 670 paras. 26, 100, 102 and 109.
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