52.79% is the change from 341 to 521
Calculation steps:
[( 521 - 341 ) ÷ 341] x 100 = 52.79%
Formula
Percentage change = [(521 - 341) / 341] x 100
Subtract the new number by the original number
521 - 341 = 180
180 ÷ 341 = 0.5278592375366569
0.5278592375366569 x 100 = 52.79%