52.4% is the change from 521 to 794
Calculation steps:
[( 794 - 521 ) ÷ 521] x 100 = 52.4%
Formula
Percentage change = [(794 - 521) / 521] x 100
Subtract the new number by the original number
794 - 521 = 273
273 ÷ 521 = 0.5239923224568138
0.5239923224568138 x 100 = 52.4%