-10.15% is the change from 591 to 531
Calculation steps:
[( 531 - 591 ) ÷ 591] x 100 = -10.15%
Formula
Percentage change = [(531 - 591) / 591] x 100
Subtract the new number by the original number
531 - 591 = -60
-60 ÷ 591 = -0.10152284263959391
-0.10152284263959391 x 100 = -10.15%