33.97% is the change from 521 to 698
Calculation steps:
[( 698 - 521 ) ÷ 521] x 100 = 33.97%
Formula
Percentage change = [(698 - 521) / 521] x 100
Subtract the new number by the original number
698 - 521 = 177
177 ÷ 521 = 0.3397312859884837
0.3397312859884837 x 100 = 33.97%