-52.72% is the change from 643 to 304
Calculation steps:
[( 304 - 643 ) ÷ 643] x 100 = -52.72%
Formula
Percentage change = [(304 - 643) / 643] x 100
Subtract the new number by the original number
304 - 643 = -339
-339 ÷ 643 = -0.5272161741835147
-0.5272161741835147 x 100 = -52.72%