-26.91% is the change from 643 to 470
Calculation steps:
[( 470 - 643 ) ÷ 643] x 100 = -26.91%
Formula
Percentage change = [(470 - 643) / 643] x 100
Subtract the new number by the original number
470 - 643 = -173
-173 ÷ 643 = -0.2690513219284603
-0.2690513219284603 x 100 = -26.91%