-34.4% is the change from 779 to 511
Calculation steps:
[( 511 - 779 ) ÷ 779] x 100 = -34.4%
Formula
Percentage change = [(511 - 779) / 779] x 100
Subtract the new number by the original number
511 - 779 = -268
-268 ÷ 779 = -0.34403080872913994
-0.34403080872913994 x 100 = -34.4%