-17.6% is the change from 591 to 487
Calculation steps:
[( 487 - 591 ) ÷ 591] x 100 = -17.6%
Formula
Percentage change = [(487 - 591) / 591] x 100
Subtract the new number by the original number
487 - 591 = -104
-104 ÷ 591 = -0.17597292724196278
-0.17597292724196278 x 100 = -17.6%