-47.69% is the change from 996 to 521
Calculation steps:
[( 521 - 996 ) ÷ 996] x 100 = -47.69%
Formula
Percentage change = [(521 - 996) / 996] x 100
Subtract the new number by the original number
521 - 996 = -475
-475 ÷ 996 = -0.47690763052208834
-0.47690763052208834 x 100 = -47.69%