-80% is the change from 960 to 192
Calculation steps:
[( 192 - 960 ) ÷ 960] x 100 = -80%
Formula
Percentage change = [(192 - 960) / 960] x 100
Subtract the new number by the original number
192 - 960 = -768
-768 ÷ 960 = -0.8
-0.8 x 100 = -80%
Example