-17.77% is the change from 591 to 486
Calculation steps:
[( 486 - 591 ) ÷ 591] x 100 = -17.77%
Formula
Percentage change = [(486 - 591) / 591] x 100
Subtract the new number by the original number
486 - 591 = -105
-105 ÷ 591 = -0.17766497461928935
-0.17766497461928935 x 100 = -17.77%