-36.56% is the change from 960 to 609
Calculation steps:
[( 609 - 960 ) ÷ 960] x 100 = -36.56%
Formula
Percentage change = [(609 - 960) / 960] x 100
Subtract the new number by the original number
609 - 960 = -351
-351 ÷ 960 = -0.365625
-0.365625 x 100 = -36.56%