-81.74% is the change from 597 to 109
Calculation steps:
[( 109 - 597 ) ÷ 597] x 100 = -81.74%
Formula
Percentage change = [(109 - 597) / 597] x 100
Subtract the new number by the original number
109 - 597 = -488
-488 ÷ 597 = -0.8174204355108877
-0.8174204355108877 x 100 = -81.74%