-27.49% is the change from 542 to 393
Calculation steps:
[( 393 - 542 ) ÷ 542] x 100 = -27.49%
Formula
Percentage change = [(393 - 542) / 542] x 100
Subtract the new number by the original number
393 - 542 = -149
-149 ÷ 542 = -0.27490774907749077
-0.27490774907749077 x 100 = -27.49%