-13.6% is the change from 684 to 591
Calculation steps:
[( 591 - 684 ) ÷ 684] x 100 = -13.6%
Formula
Percentage change = [(591 - 684) / 684] x 100
Subtract the new number by the original number
591 - 684 = -93
-93 ÷ 684 = -0.13596491228070176
-0.13596491228070176 x 100 = -13.6%