53.14% is the change from 542 to 830
Calculation steps:
[( 830 - 542 ) ÷ 542] x 100 = 53.14%
Formula
Percentage change = [(830 - 542) / 542] x 100
Subtract the new number by the original number
830 - 542 = 288
288 ÷ 542 = 0.5313653136531366
0.5313653136531366 x 100 = 53.14%