-25.82% is the change from 643 to 477
Calculation steps:
[( 477 - 643 ) ÷ 643] x 100 = -25.82%
Formula
Percentage change = [(477 - 643) / 643] x 100
Subtract the new number by the original number
477 - 643 = -166
-166 ÷ 643 = -0.2581648522550544
-0.2581648522550544 x 100 = -25.82%