58.73% is the change from 521 to 827
Calculation steps:
[( 827 - 521 ) ÷ 521] x 100 = 58.73%
Formula
Percentage change = [(827 - 521) / 521] x 100
Subtract the new number by the original number
827 - 521 = 306
306 ÷ 521 = 0.5873320537428023
0.5873320537428023 x 100 = 58.73%