-21.04% is the change from 618 to 488
Calculation steps:
[( 488 - 618 ) ÷ 618] x 100 = -21.04%
Formula
Percentage change = [(488 - 618) / 618] x 100
Subtract the new number by the original number
488 - 618 = -130
-130 ÷ 618 = -0.21035598705501618
-0.21035598705501618 x 100 = -21.04%