34.17% is the change from 521 to 699
Calculation steps:
[( 699 - 521 ) ÷ 521] x 100 = 34.17%
Formula
Percentage change = [(699 - 521) / 521] x 100
Subtract the new number by the original number
699 - 521 = 178
178 ÷ 521 = 0.3416506717850288
0.3416506717850288 x 100 = 34.17%