-55.13% is the change from 624 to 280
Calculation steps:
[( 280 - 624 ) ÷ 624] x 100 = -55.13%
Formula
Percentage change = [(280 - 624) / 624] x 100
Subtract the new number by the original number
280 - 624 = -344
-344 ÷ 624 = -0.5512820512820513
-0.5512820512820513 x 100 = -55.13%