-36.35% is the change from 641 to 408
Calculation steps:
[( 408 - 641 ) ÷ 641] x 100 = -36.35%
Formula
Percentage change = [(408 - 641) / 641] x 100
Subtract the new number by the original number
408 - 641 = -233
-233 ÷ 641 = -0.36349453978159124
-0.36349453978159124 x 100 = -36.35%