-28.86% is the change from 641 to 456
Calculation steps:
[( 456 - 641 ) ÷ 641] x 100 = -28.86%
Formula
Percentage change = [(456 - 641) / 641] x 100
Subtract the new number by the original number
456 - 641 = -185
-185 ÷ 641 = -0.28861154446177845
-0.28861154446177845 x 100 = -28.86%