-18% is the change from 950 to 779
Calculation steps:
[( 779 - 950 ) ÷ 950] x 100 = -18%
Formula
Percentage change = [(779 - 950) / 950] x 100
Subtract the new number by the original number
779 - 950 = -171
-171 ÷ 950 = -0.18
-0.18 x 100 = -18%
Example