-29.81% is the change from 624 to 438
Calculation steps:
[( 438 - 624 ) ÷ 624] x 100 = -29.81%
Formula
Percentage change = [(438 - 624) / 624] x 100
Subtract the new number by the original number
438 - 624 = -186
-186 ÷ 624 = -0.2980769230769231
-0.2980769230769231 x 100 = -29.81%