-39.76% is the change from 981 to 591
Calculation steps:
[( 591 - 981 ) ÷ 981] x 100 = -39.76%
Formula
Percentage change = [(591 - 981) / 981] x 100
Subtract the new number by the original number
591 - 981 = -390
-390 ÷ 981 = -0.39755351681957185
-0.39755351681957185 x 100 = -39.76%