-98.88% is the change from 624 to 7
Calculation steps:
[( 7 - 624 ) ÷ 624] x 100 = -98.88%
Formula
Percentage change = [(7 - 624) / 624] x 100
Subtract the new number by the original number
7 - 624 = -617
-617 ÷ 624 = -0.9887820512820513
-0.9887820512820513 x 100 = -98.88%