-24.19% is the change from 645 to 489
Calculation steps:
[( 489 - 645 ) ÷ 645] x 100 = -24.19%
Formula
Percentage change = [(489 - 645) / 645] x 100
Subtract the new number by the original number
489 - 645 = -156
-156 ÷ 645 = -0.24186046511627907
-0.24186046511627907 x 100 = -24.19%