-66.75% is the change from 779 to 259
Calculation steps:
[( 259 - 779 ) ÷ 779] x 100 = -66.75%
Formula
Percentage change = [(259 - 779) / 779] x 100
Subtract the new number by the original number
259 - 779 = -520
-520 ÷ 779 = -0.6675224646983312
-0.6675224646983312 x 100 = -66.75%