38.92% is the change from 591 to 821
Calculation steps:
[( 821 - 591 ) ÷ 591] x 100 = 38.92%
Formula
Percentage change = [(821 - 591) / 591] x 100
Subtract the new number by the original number
821 - 591 = 230
230 ÷ 591 = 0.38917089678510997
0.38917089678510997 x 100 = 38.92%