-40.12% is the change from 997 to 597
Calculation steps:
[( 597 - 997 ) ÷ 997] x 100 = -40.12%
Formula
Percentage change = [(597 - 997) / 997] x 100
Subtract the new number by the original number
597 - 997 = -400
-400 ÷ 997 = -0.4012036108324975
-0.4012036108324975 x 100 = -40.12%