-18.27% is the change from 624 to 510
Calculation steps:
[( 510 - 624 ) ÷ 624] x 100 = -18.27%
Formula
Percentage change = [(510 - 624) / 624] x 100
Subtract the new number by the original number
510 - 624 = -114
-114 ÷ 624 = -0.18269230769230768
-0.18269230769230768 x 100 = -18.27%