-20.28% is the change from 779 to 621
Calculation steps:
[( 621 - 779 ) ÷ 779] x 100 = -20.28%
Formula
Percentage change = [(621 - 779) / 779] x 100
Subtract the new number by the original number
621 - 779 = -158
-158 ÷ 779 = -0.20282413350449294
-0.20282413350449294 x 100 = -20.28%