55.14% is the change from 535 to 830
Calculation steps:
[( 830 - 535 ) ÷ 535] x 100 = 55.14%
Formula
Percentage change = [(830 - 535) / 535] x 100
Subtract the new number by the original number
830 - 535 = 295
295 ÷ 535 = 0.5514018691588785
0.5514018691588785 x 100 = 55.14%