-24.11% is the change from 643 to 488
Calculation steps:
[( 488 - 643 ) ÷ 643] x 100 = -24.11%
Formula
Percentage change = [(488 - 643) / 643] x 100
Subtract the new number by the original number
488 - 643 = -155
-155 ÷ 643 = -0.2410575427682737
-0.2410575427682737 x 100 = -24.11%