-68.13% is the change from 960 to 306
Calculation steps:
[( 306 - 960 ) ÷ 960] x 100 = -68.13%
Formula
Percentage change = [(306 - 960) / 960] x 100
Subtract the new number by the original number
306 - 960 = -654
-654 ÷ 960 = -0.68125
-0.68125 x 100 = -68.13%