-7.5% is the change from 960 to 888
Calculation steps:
[( 888 - 960 ) ÷ 960] x 100 = -7.5%
Formula
Percentage change = [(888 - 960) / 960] x 100
Subtract the new number by the original number
888 - 960 = -72
-72 ÷ 960 = -0.075
-0.075 x 100 = -7.5%
Example