-34.19% is the change from 939 to 618
Calculation steps:
[( 618 - 939 ) ÷ 939] x 100 = -34.19%
Formula
Percentage change = [(618 - 939) / 939] x 100
Subtract the new number by the original number
618 - 939 = -321
-321 ÷ 939 = -0.34185303514376997
-0.34185303514376997 x 100 = -34.19%