-29.61% is the change from 878 to 618
Calculation steps:
[( 618 - 878 ) ÷ 878] x 100 = -29.61%
Formula
Percentage change = [(618 - 878) / 878] x 100
Subtract the new number by the original number
618 - 878 = -260
-260 ÷ 878 = -0.296127562642369
-0.296127562642369 x 100 = -29.61%