-48.99% is the change from 641 to 327
Calculation steps:
[( 327 - 641 ) ÷ 641] x 100 = -48.99%
Formula
Percentage change = [(327 - 641) / 641] x 100
Subtract the new number by the original number
327 - 641 = -314
-314 ÷ 641 = -0.48985959438377535
-0.48985959438377535 x 100 = -48.99%