-15.91% is the change from 591 to 497
Calculation steps:
[( 497 - 591 ) ÷ 591] x 100 = -15.91%
Formula
Percentage change = [(497 - 591) / 591] x 100
Subtract the new number by the original number
497 - 591 = -94
-94 ÷ 591 = -0.15905245346869712
-0.15905245346869712 x 100 = -15.91%