-49.46% is the change from 643 to 325
Calculation steps:
[( 325 - 643 ) ÷ 643] x 100 = -49.46%
Formula
Percentage change = [(325 - 643) / 643] x 100
Subtract the new number by the original number
325 - 643 = -318
-318 ÷ 643 = -0.49455676516329705
-0.49455676516329705 x 100 = -49.46%