-57.5% is the change from 993 to 422
Calculation steps:
[( 422 - 993 ) ÷ 993] x 100 = -57.5%
Formula
Percentage change = [(422 - 993) / 993] x 100
Subtract the new number by the original number
422 - 993 = -571
-571 ÷ 993 = -0.5750251762336355
-0.5750251762336355 x 100 = -57.5%