-77.5% is the change from 960 to 216
Calculation steps:
[( 216 - 960 ) ÷ 960] x 100 = -77.5%
Formula
Percentage change = [(216 - 960) / 960] x 100
Subtract the new number by the original number
216 - 960 = -744
-744 ÷ 960 = -0.775
-0.775 x 100 = -77.5%