-13.37% is the change from 591 to 512
Calculation steps:
[( 512 - 591 ) ÷ 591] x 100 = -13.37%
Formula
Percentage change = [(512 - 591) / 591] x 100
Subtract the new number by the original number
512 - 591 = -79
-79 ÷ 591 = -0.13367174280879865
-0.13367174280879865 x 100 = -13.37%