-48.56% is the change from 624 to 321
Calculation steps:
[( 321 - 624 ) ÷ 624] x 100 = -48.56%
Formula
Percentage change = [(321 - 624) / 624] x 100
Subtract the new number by the original number
321 - 624 = -303
-303 ÷ 624 = -0.4855769230769231
-0.4855769230769231 x 100 = -48.56%