14.59% is the change from 521 to 597
Calculation steps:
[( 597 - 521 ) ÷ 521] x 100 = 14.59%
Formula
Percentage change = [(597 - 521) / 521] x 100
Subtract the new number by the original number
597 - 521 = 76
76 ÷ 521 = 0.14587332053742802
0.14587332053742802 x 100 = 14.59%