67.75% is the change from 521 to 874
Calculation steps:
[( 874 - 521 ) ÷ 521] x 100 = 67.75%
Formula
Percentage change = [(874 - 521) / 521] x 100
Subtract the new number by the original number
874 - 521 = 353
353 ÷ 521 = 0.6775431861804223
0.6775431861804223 x 100 = 67.75%