-45.16% is the change from 950 to 521
Calculation steps:
[( 521 - 950 ) ÷ 950] x 100 = -45.16%
Formula
Percentage change = [(521 - 950) / 950] x 100
Subtract the new number by the original number
521 - 950 = -429
-429 ÷ 950 = -0.4515789473684211
-0.4515789473684211 x 100 = -45.16%