-20.54% is the change from 779 to 619
Calculation steps:
[( 619 - 779 ) ÷ 779] x 100 = -20.54%
Formula
Percentage change = [(619 - 779) / 779] x 100
Subtract the new number by the original number
619 - 779 = -160
-160 ÷ 779 = -0.20539152759948653
-0.20539152759948653 x 100 = -20.54%