-45.81% is the change from 609 to 330
Calculation steps:
[( 330 - 609 ) ÷ 609] x 100 = -45.81%
Formula
Percentage change = [(330 - 609) / 609] x 100
Subtract the new number by the original number
330 - 609 = -279
-279 ÷ 609 = -0.458128078817734
-0.458128078817734 x 100 = -45.81%