-48.14% is the change from 993 to 515
Calculation steps:
[( 515 - 993 ) ÷ 993] x 100 = -48.14%
Formula
Percentage change = [(515 - 993) / 993] x 100
Subtract the new number by the original number
515 - 993 = -478
-478 ÷ 993 = -0.4813695871097684
-0.4813695871097684 x 100 = -48.14%