-12.94% is the change from 618 to 538
Calculation steps:
[( 538 - 618 ) ÷ 618] x 100 = -12.94%
Formula
Percentage change = [(538 - 618) / 618] x 100
Subtract the new number by the original number
538 - 618 = -80
-80 ÷ 618 = -0.12944983818770225
-0.12944983818770225 x 100 = -12.94%