-59.84% is the change from 645 to 259
Calculation steps:
[( 259 - 645 ) ÷ 645] x 100 = -59.84%
Formula
Percentage change = [(259 - 645) / 645] x 100
Subtract the new number by the original number
259 - 645 = -386
-386 ÷ 645 = -0.5984496124031008
-0.5984496124031008 x 100 = -59.84%