-24.34% is the change from 645 to 488
Calculation steps:
[( 488 - 645 ) ÷ 645] x 100 = -24.34%
Formula
Percentage change = [(488 - 645) / 645] x 100
Subtract the new number by the original number
488 - 645 = -157
-157 ÷ 645 = -0.2434108527131783
-0.2434108527131783 x 100 = -24.34%