-96.13% is the change from 620 to 24
Calculation steps:
[( 24 - 620 ) ÷ 620] x 100 = -96.13%
Formula
Percentage change = [(24 - 620) / 620] x 100
Subtract the new number by the original number
24 - 620 = -596
-596 ÷ 620 = -0.9612903225806452
-0.9612903225806452 x 100 = -96.13%