15.91% is the change from 591 to 685
Calculation steps:
[( 685 - 591 ) ÷ 591] x 100 = 15.91%
Formula
Percentage change = [(685 - 591) / 591] x 100
Subtract the new number by the original number
685 - 591 = 94
94 ÷ 591 = 0.15905245346869712
0.15905245346869712 x 100 = 15.91%