22.07% is the change from 521 to 636
Calculation steps:
[( 636 - 521 ) ÷ 521] x 100 = 22.07%
Formula
Percentage change = [(636 - 521) / 521] x 100
Subtract the new number by the original number
636 - 521 = 115
115 ÷ 521 = 0.22072936660268713
0.22072936660268713 x 100 = 22.07%