-28.62% is the change from 643 to 459
Calculation steps:
[( 459 - 643 ) ÷ 643] x 100 = -28.62%
Formula
Percentage change = [(459 - 643) / 643] x 100
Subtract the new number by the original number
459 - 643 = -184
-184 ÷ 643 = -0.28615863141524106
-0.28615863141524106 x 100 = -28.62%