33.9% is the change from 646 to 865
Calculation steps:
[( 865 - 646 ) ÷ 646] x 100 = 33.9%
Formula
Percentage change = [(865 - 646) / 646] x 100
Subtract the new number by the original number
865 - 646 = 219
219 ÷ 646 = 0.33900928792569657
0.33900928792569657 x 100 = 33.9%