403.03% is the change from 165 to 830
Calculation steps:
[( 830 - 165 ) ÷ 165] x 100 = 403.03%
Formula
Percentage change = [(830 - 165) / 165] x 100
Subtract the new number by the original number
830 - 165 = 665
665 ÷ 165 = 4.03030303030303
4.03030303030303 x 100 = 403.03%