-6.7% is the change from 597 to 557
Calculation steps:
[( 557 - 597 ) ÷ 597] x 100 = -6.7%
Formula
Percentage change = [(557 - 597) / 597] x 100
Subtract the new number by the original number
557 - 597 = -40
-40 ÷ 597 = -0.06700167504187604
-0.06700167504187604 x 100 = -6.7%