-96.14% is the change from 621 to 24
Calculation steps:
[( 24 - 621 ) ÷ 621] x 100 = -96.14%
Formula
Percentage change = [(24 - 621) / 621] x 100
Subtract the new number by the original number
24 - 621 = -597
-597 ÷ 621 = -0.961352657004831
-0.961352657004831 x 100 = -96.14%