-31.15% is the change from 960 to 661
Calculation steps:
[( 661 - 960 ) ÷ 960] x 100 = -31.15%
Formula
Percentage change = [(661 - 960) / 960] x 100
Subtract the new number by the original number
661 - 960 = -299
-299 ÷ 960 = -0.31145833333333334
-0.31145833333333334 x 100 = -31.15%