-24.61% is the change from 642 to 484
Calculation steps:
[( 484 - 642 ) ÷ 642] x 100 = -24.61%
Formula
Percentage change = [(484 - 642) / 642] x 100
Subtract the new number by the original number
484 - 642 = -158
-158 ÷ 642 = -0.24610591900311526
-0.24610591900311526 x 100 = -24.61%