-66.5% is the change from 618 to 207
Calculation steps:
[( 207 - 618 ) ÷ 618] x 100 = -66.5%
Formula
Percentage change = [(207 - 618) / 618] x 100
Subtract the new number by the original number
207 - 618 = -411
-411 ÷ 618 = -0.6650485436893204
-0.6650485436893204 x 100 = -66.5%