-59.72% is the change from 643 to 259
Calculation steps:
[( 259 - 643 ) ÷ 643] x 100 = -59.72%
Formula
Percentage change = [(259 - 643) / 643] x 100
Subtract the new number by the original number
259 - 643 = -384
-384 ÷ 643 = -0.5972006220839814
-0.5972006220839814 x 100 = -59.72%