-16.75% is the change from 597 to 497
Calculation steps:
[( 497 - 597 ) ÷ 597] x 100 = -16.75%
Formula
Percentage change = [(497 - 597) / 597] x 100
Subtract the new number by the original number
497 - 597 = -100
-100 ÷ 597 = -0.16750418760469013
-0.16750418760469013 x 100 = -16.75%