39.35% is the change from 521 to 726
Calculation steps:
[( 726 - 521 ) ÷ 521] x 100 = 39.35%
Formula
Percentage change = [(726 - 521) / 521] x 100
Subtract the new number by the original number
726 - 521 = 205
205 ÷ 521 = 0.3934740882917466
0.3934740882917466 x 100 = 39.35%