-30.84% is the change from 642 to 444
Calculation steps:
[( 444 - 642 ) ÷ 642] x 100 = -30.84%
Formula
Percentage change = [(444 - 642) / 642] x 100
Subtract the new number by the original number
444 - 642 = -198
-198 ÷ 642 = -0.308411214953271
-0.308411214953271 x 100 = -30.84%