-39% is the change from 977 to 596
Calculation steps:
[( 596 - 977 ) ÷ 977] x 100 = -39%
Formula
Percentage change = [(596 - 977) / 977] x 100
Subtract the new number by the original number
596 - 977 = -381
-381 ÷ 977 = -0.38996929375639716
-0.38996929375639716 x 100 = -39%