56.9% is the change from 529 to 830
Calculation steps:
[( 830 - 529 ) ÷ 529] x 100 = 56.9%
Formula
Percentage change = [(830 - 529) / 529] x 100
Subtract the new number by the original number
830 - 529 = 301
301 ÷ 529 = 0.5689981096408318
0.5689981096408318 x 100 = 56.9%