-30.1% is the change from 960 to 671
Calculation steps:
[( 671 - 960 ) ÷ 960] x 100 = -30.1%
Formula
Percentage change = [(671 - 960) / 960] x 100
Subtract the new number by the original number
671 - 960 = -289
-289 ÷ 960 = -0.30104166666666665
-0.30104166666666665 x 100 = -30.1%