-78.18% is the change from 779 to 170
Calculation steps:
[( 170 - 779 ) ÷ 779] x 100 = -78.18%
Formula
Percentage change = [(170 - 779) / 779] x 100
Subtract the new number by the original number
170 - 779 = -609
-609 ÷ 779 = -0.7817715019255456
-0.7817715019255456 x 100 = -78.18%