-39.13% is the change from 971 to 591
Calculation steps:
[( 591 - 971 ) ÷ 971] x 100 = -39.13%
Formula
Percentage change = [(591 - 971) / 971] x 100
Subtract the new number by the original number
591 - 971 = -380
-380 ÷ 971 = -0.3913491246138002
-0.3913491246138002 x 100 = -39.13%