-88.51% is the change from 644 to 74
Calculation steps:
[( 74 - 644 ) ÷ 644] x 100 = -88.51%
Formula
Percentage change = [(74 - 644) / 644] x 100
Subtract the new number by the original number
74 - 644 = -570
-570 ÷ 644 = -0.8850931677018633
-0.8850931677018633 x 100 = -88.51%