-47.31% is the change from 966 to 509
Calculation steps:
[( 509 - 966 ) ÷ 966] x 100 = -47.31%
Formula
Percentage change = [(509 - 966) / 966] x 100
Subtract the new number by the original number
509 - 966 = -457
-457 ÷ 966 = -0.4730848861283644
-0.4730848861283644 x 100 = -47.31%