-46.07% is the change from 966 to 521
Calculation steps:
[( 521 - 966 ) ÷ 966] x 100 = -46.07%
Formula
Percentage change = [(521 - 966) / 966] x 100
Subtract the new number by the original number
521 - 966 = -445
-445 ÷ 966 = -0.4606625258799172
-0.4606625258799172 x 100 = -46.07%