24.07% is the change from 669 to 830
Calculation steps:
[( 830 - 669 ) ÷ 669] x 100 = 24.07%
Formula
Percentage change = [(830 - 669) / 669] x 100
Subtract the new number by the original number
830 - 669 = 161
161 ÷ 669 = 0.2406576980568012
0.2406576980568012 x 100 = 24.07%