1.34% is the change from 521 to 528
Calculation steps:
[( 528 - 521 ) ÷ 521] x 100 = 1.34%
Formula
Percentage change = [(528 - 521) / 521] x 100
Subtract the new number by the original number
528 - 521 = 7
7 ÷ 521 = 0.013435700575815739
0.013435700575815739 x 100 = 1.34%