-18.11% is the change from 624 to 511
Calculation steps:
[( 511 - 624 ) ÷ 624] x 100 = -18.11%
Formula
Percentage change = [(511 - 624) / 624] x 100
Subtract the new number by the original number
511 - 624 = -113
-113 ÷ 624 = -0.18108974358974358
-0.18108974358974358 x 100 = -18.11%