-19.69% is the change from 960 to 771
Calculation steps:
[( 771 - 960 ) ÷ 960] x 100 = -19.69%
Formula
Percentage change = [(771 - 960) / 960] x 100
Subtract the new number by the original number
771 - 960 = -189
-189 ÷ 960 = -0.196875
-0.196875 x 100 = -19.69%