57.79% is the change from 526 to 830
Calculation steps:
[( 830 - 526 ) ÷ 526] x 100 = 57.79%
Formula
Percentage change = [(830 - 526) / 526] x 100
Subtract the new number by the original number
830 - 526 = 304
304 ÷ 526 = 0.5779467680608364
0.5779467680608364 x 100 = 57.79%