13.54% is the change from 591 to 671
Calculation steps:
[( 671 - 591 ) ÷ 591] x 100 = 13.54%
Formula
Percentage change = [(671 - 591) / 591] x 100
Subtract the new number by the original number
671 - 591 = 80
80 ÷ 591 = 0.1353637901861252
0.1353637901861252 x 100 = 13.54%