-36.52% is the change from 931 to 591
Calculation steps:
[( 591 - 931 ) ÷ 931] x 100 = -36.52%
Formula
Percentage change = [(591 - 931) / 931] x 100
Subtract the new number by the original number
591 - 931 = -340
-340 ÷ 931 = -0.3651987110633727
-0.3651987110633727 x 100 = -36.52%