-47.72% is the change from 966 to 505
Calculation steps:
[( 505 - 966 ) ÷ 966] x 100 = -47.72%
Formula
Percentage change = [(505 - 966) / 966] x 100
Subtract the new number by the original number
505 - 966 = -461
-461 ÷ 966 = -0.4772256728778468
-0.4772256728778468 x 100 = -47.72%