-17.81% is the change from 960 to 789
Calculation steps:
[( 789 - 960 ) ÷ 960] x 100 = -17.81%
Formula
Percentage change = [(789 - 960) / 960] x 100
Subtract the new number by the original number
789 - 960 = -171
-171 ÷ 960 = -0.178125
-0.178125 x 100 = -17.81%