27.24% is the change from 646 to 822
Calculation steps:
[( 822 - 646 ) ÷ 646] x 100 = 27.24%
Formula
Percentage change = [(822 - 646) / 646] x 100
Subtract the new number by the original number
822 - 646 = 176
176 ÷ 646 = 0.2724458204334365
0.2724458204334365 x 100 = 27.24%