28.57% is the change from 637 to 819
Calculation steps:
[( 819 - 637 ) ÷ 637] x 100 = 28.57%
Formula
Percentage change = [(819 - 637) / 637] x 100
Subtract the new number by the original number
819 - 637 = 182
182 ÷ 637 = 0.2857142857142857
0.2857142857142857 x 100 = 28.57%