-59.66% is the change from 642 to 259
Calculation steps:
[( 259 - 642 ) ÷ 642] x 100 = -59.66%
Formula
Percentage change = [(259 - 642) / 642] x 100
Subtract the new number by the original number
259 - 642 = -383
-383 ÷ 642 = -0.5965732087227414
-0.5965732087227414 x 100 = -59.66%