-2.88% is the change from 624 to 606
Calculation steps:
[( 606 - 624 ) ÷ 624] x 100 = -2.88%
Formula
Percentage change = [(606 - 624) / 624] x 100
Subtract the new number by the original number
606 - 624 = -18
-18 ÷ 624 = -0.028846153846153848
-0.028846153846153848 x 100 = -2.88%