32.13% is the change from 638 to 843
Calculation steps:
[( 843 - 638 ) ÷ 638] x 100 = 32.13%
Formula
Percentage change = [(843 - 638) / 638] x 100
Subtract the new number by the original number
843 - 638 = 205
205 ÷ 638 = 0.3213166144200627
0.3213166144200627 x 100 = 32.13%