-17.95% is the change from 624 to 512
Calculation steps:
[( 512 - 624 ) ÷ 624] x 100 = -17.95%
Formula
Percentage change = [(512 - 624) / 624] x 100
Subtract the new number by the original number
512 - 624 = -112
-112 ÷ 624 = -0.1794871794871795
-0.1794871794871795 x 100 = -17.95%