-40.72% is the change from 997 to 591
Calculation steps:
[( 591 - 997 ) ÷ 997] x 100 = -40.72%
Formula
Percentage change = [(591 - 997) / 997] x 100
Subtract the new number by the original number
591 - 997 = -406
-406 ÷ 997 = -0.40722166499498497
-0.40722166499498497 x 100 = -40.72%