74.09% is the change from 521 to 907
Calculation steps:
[( 907 - 521 ) ÷ 521] x 100 = 74.09%
Formula
Percentage change = [(907 - 521) / 521] x 100
Subtract the new number by the original number
907 - 521 = 386
386 ÷ 521 = 0.7408829174664108
0.7408829174664108 x 100 = 74.09%