79.27% is the change from 521 to 934
Calculation steps:
[( 934 - 521 ) ÷ 521] x 100 = 79.27%
Formula
Percentage change = [(934 - 521) / 521] x 100
Subtract the new number by the original number
934 - 521 = 413
413 ÷ 521 = 0.7927063339731286
0.7927063339731286 x 100 = 79.27%