-24.26% is the change from 643 to 487
Calculation steps:
[( 487 - 643 ) ÷ 643] x 100 = -24.26%
Formula
Percentage change = [(487 - 643) / 643] x 100
Subtract the new number by the original number
487 - 643 = -156
-156 ÷ 643 = -0.24261275272161742
-0.24261275272161742 x 100 = -24.26%