421.08% is the change from 166 to 865
Calculation steps:
[( 865 - 166 ) ÷ 166] x 100 = 421.08%
Formula
Percentage change = [(865 - 166) / 166] x 100
Subtract the new number by the original number
865 - 166 = 699
699 ÷ 166 = 4.210843373493976
4.210843373493976 x 100 = 421.08%