-2.03% is the change from 542 to 531
Calculation steps:
[( 531 - 542 ) ÷ 542] x 100 = -2.03%
Formula
Percentage change = [(531 - 542) / 542] x 100
Subtract the new number by the original number
531 - 542 = -11
-11 ÷ 542 = -0.02029520295202952
-0.02029520295202952 x 100 = -2.03%