-24.42% is the change from 643 to 486
Calculation steps:
[( 486 - 643 ) ÷ 643] x 100 = -24.42%
Formula
Percentage change = [(486 - 643) / 643] x 100
Subtract the new number by the original number
486 - 643 = -157
-157 ÷ 643 = -0.24416796267496113
-0.24416796267496113 x 100 = -24.42%