-96.21% is the change from 634 to 24
Calculation steps:
[( 24 - 634 ) ÷ 634] x 100 = -96.21%
Formula
Percentage change = [(24 - 634) / 634] x 100
Subtract the new number by the original number
24 - 634 = -610
-610 ÷ 634 = -0.9621451104100947
-0.9621451104100947 x 100 = -96.21%