28.02% is the change from 646 to 827
Calculation steps:
[( 827 - 646 ) ÷ 646] x 100 = 28.02%
Formula
Percentage change = [(827 - 646) / 646] x 100
Subtract the new number by the original number
827 - 646 = 181
181 ÷ 646 = 0.2801857585139319
0.2801857585139319 x 100 = 28.02%