-20.77% is the change from 780 to 618
Calculation steps:
[( 618 - 780 ) ÷ 780] x 100 = -20.77%
Formula
Percentage change = [(618 - 780) / 780] x 100
Subtract the new number by the original number
618 - 780 = -162
-162 ÷ 780 = -0.2076923076923077
-0.2076923076923077 x 100 = -20.77%