46.64% is the change from 521 to 764
Calculation steps:
[( 764 - 521 ) ÷ 521] x 100 = 46.64%
Formula
Percentage change = [(764 - 521) / 521] x 100
Subtract the new number by the original number
764 - 521 = 243
243 ÷ 521 = 0.46641074856046066
0.46641074856046066 x 100 = 46.64%