-17.5% is the change from 657 to 542
Calculation steps:
[( 542 - 657 ) ÷ 657] x 100 = -17.5%
Formula
Percentage change = [(542 - 657) / 657] x 100
Subtract the new number by the original number
542 - 657 = -115
-115 ÷ 657 = -0.1750380517503805
-0.1750380517503805 x 100 = -17.5%