-14.9% is the change from 960 to 817
Calculation steps:
[( 817 - 960 ) ÷ 960] x 100 = -14.9%
Formula
Percentage change = [(817 - 960) / 960] x 100
Subtract the new number by the original number
817 - 960 = -143
-143 ÷ 960 = -0.14895833333333333
-0.14895833333333333 x 100 = -14.9%