57.77% is the change from 521 to 822
Calculation steps:
[( 822 - 521 ) ÷ 521] x 100 = 57.77%
Formula
Percentage change = [(822 - 521) / 521] x 100
Subtract the new number by the original number
822 - 521 = 301
301 ÷ 521 = 0.5777351247600768
0.5777351247600768 x 100 = 57.77%