-81.39% is the change from 779 to 145
Calculation steps:
[( 145 - 779 ) ÷ 779] x 100 = -81.39%
Formula
Percentage change = [(145 - 779) / 779] x 100
Subtract the new number by the original number
145 - 779 = -634
-634 ÷ 779 = -0.8138639281129654
-0.8138639281129654 x 100 = -81.39%