-47.4% is the change from 960 to 505
Calculation steps:
[( 505 - 960 ) ÷ 960] x 100 = -47.4%
Formula
Percentage change = [(505 - 960) / 960] x 100
Subtract the new number by the original number
505 - 960 = -455
-455 ÷ 960 = -0.4739583333333333
-0.4739583333333333 x 100 = -47.4%