-67.92% is the change from 960 to 308
Calculation steps:
[( 308 - 960 ) ÷ 960] x 100 = -67.92%
Formula
Percentage change = [(308 - 960) / 960] x 100
Subtract the new number by the original number
308 - 960 = -652
-652 ÷ 960 = -0.6791666666666667
-0.6791666666666667 x 100 = -67.92%