74.74% is the change from 475 to 830
Calculation steps:
[( 830 - 475 ) ÷ 475] x 100 = 74.74%
Formula
Percentage change = [(830 - 475) / 475] x 100
Subtract the new number by the original number
830 - 475 = 355
355 ÷ 475 = 0.7473684210526316
0.7473684210526316 x 100 = 74.74%