-9.96% is the change from 542 to 488
Calculation steps:
[( 488 - 542 ) ÷ 542] x 100 = -9.96%
Formula
Percentage change = [(488 - 542) / 542] x 100
Subtract the new number by the original number
488 - 542 = -54
-54 ÷ 542 = -0.0996309963099631
-0.0996309963099631 x 100 = -9.96%