-66.83% is the change from 597 to 198
Calculation steps:
[( 198 - 597 ) ÷ 597] x 100 = -66.83%
Formula
Percentage change = [(198 - 597) / 597] x 100
Subtract the new number by the original number
198 - 597 = -399
-399 ÷ 597 = -0.6683417085427136
-0.6683417085427136 x 100 = -66.83%