-47.94% is the change from 997 to 519
Calculation steps:
[( 519 - 997 ) ÷ 997] x 100 = -47.94%
Formula
Percentage change = [(519 - 997) / 997] x 100
Subtract the new number by the original number
519 - 997 = -478
-478 ÷ 997 = -0.4794383149448345
-0.4794383149448345 x 100 = -47.94%