34.37% is the change from 646 to 868
Calculation steps:
[( 868 - 646 ) ÷ 646] x 100 = 34.37%
Formula
Percentage change = [(868 - 646) / 646] x 100
Subtract the new number by the original number
868 - 646 = 222
222 ÷ 646 = 0.34365325077399383
0.34365325077399383 x 100 = 34.37%