-19.71% is the change from 624 to 501
Calculation steps:
[( 501 - 624 ) ÷ 624] x 100 = -19.71%
Formula
Percentage change = [(501 - 624) / 624] x 100
Subtract the new number by the original number
501 - 624 = -123
-123 ÷ 624 = -0.1971153846153846
-0.1971153846153846 x 100 = -19.71%