-45.42% is the change from 993 to 542
Calculation steps:
[( 542 - 993 ) ÷ 993] x 100 = -45.42%
Formula
Percentage change = [(542 - 993) / 993] x 100
Subtract the new number by the original number
542 - 993 = -451
-451 ÷ 993 = -0.45417925478348437
-0.45417925478348437 x 100 = -45.42%