-23.87% is the change from 641 to 488
Calculation steps:
[( 488 - 641 ) ÷ 641] x 100 = -23.87%
Formula
Percentage change = [(488 - 641) / 641] x 100
Subtract the new number by the original number
488 - 641 = -153
-153 ÷ 641 = -0.23868954758190328
-0.23868954758190328 x 100 = -23.87%