-41.89% is the change from 993 to 577
Calculation steps:
[( 577 - 993 ) ÷ 993] x 100 = -41.89%
Formula
Percentage change = [(577 - 993) / 993] x 100
Subtract the new number by the original number
577 - 993 = -416
-416 ÷ 993 = -0.418932527693857
-0.418932527693857 x 100 = -41.89%