-83.58% is the change from 597 to 98
Calculation steps:
[( 98 - 597 ) ÷ 597] x 100 = -83.58%
Formula
Percentage change = [(98 - 597) / 597] x 100
Subtract the new number by the original number
98 - 597 = -499
-499 ÷ 597 = -0.8358458961474037
-0.8358458961474037 x 100 = -83.58%