83.63% is the change from 452 to 830
Calculation steps:
[( 830 - 452 ) ÷ 452] x 100 = 83.63%
Formula
Percentage change = [(830 - 452) / 452] x 100
Subtract the new number by the original number
830 - 452 = 378
378 ÷ 452 = 0.8362831858407079
0.8362831858407079 x 100 = 83.63%