28.64% is the change from 639 to 822
Calculation steps:
[( 822 - 639 ) ÷ 639] x 100 = 28.64%
Formula
Percentage change = [(822 - 639) / 639] x 100
Subtract the new number by the original number
822 - 639 = 183
183 ÷ 639 = 0.2863849765258216
0.2863849765258216 x 100 = 28.64%