-73.79% is the change from 641 to 168
Calculation steps:
[( 168 - 641 ) ÷ 641] x 100 = -73.79%
Formula
Percentage change = [(168 - 641) / 641] x 100
Subtract the new number by the original number
168 - 641 = -473
-473 ÷ 641 = -0.7379095163806553
-0.7379095163806553 x 100 = -73.79%