-5.94% is the change from 657 to 618
Calculation steps:
[( 618 - 657 ) ÷ 657] x 100 = -5.94%
Formula
Percentage change = [(618 - 657) / 657] x 100
Subtract the new number by the original number
618 - 657 = -39
-39 ÷ 657 = -0.0593607305936073
-0.0593607305936073 x 100 = -5.94%