118.42% is the change from 380 to 830
Calculation steps:
[( 830 - 380 ) ÷ 380] x 100 = 118.42%
Formula
Percentage change = [(830 - 380) / 380] x 100
Subtract the new number by the original number
830 - 380 = 450
450 ÷ 380 = 1.1842105263157894
1.1842105263157894 x 100 = 118.42%