-47.59% is the change from 994 to 521
Calculation steps:
[( 521 - 994 ) ÷ 994] x 100 = -47.59%
Formula
Percentage change = [(521 - 994) / 994] x 100
Subtract the new number by the original number
521 - 994 = -473
-473 ÷ 994 = -0.47585513078470826
-0.47585513078470826 x 100 = -47.59%