-96.26% is the change from 641 to 24
Calculation steps:
[( 24 - 641 ) ÷ 641] x 100 = -96.26%
Formula
Percentage change = [(24 - 641) / 641] x 100
Subtract the new number by the original number
24 - 641 = -617
-617 ÷ 641 = -0.9625585023400937
-0.9625585023400937 x 100 = -96.26%