-88.47% is the change from 642 to 74
Calculation steps:
[( 74 - 642 ) ÷ 642] x 100 = -88.47%
Formula
Percentage change = [(74 - 642) / 642] x 100
Subtract the new number by the original number
74 - 642 = -568
-568 ÷ 642 = -0.8847352024922118
-0.8847352024922118 x 100 = -88.47%