90.4% is the change from 521 to 992
Calculation steps:
[( 992 - 521 ) ÷ 521] x 100 = 90.4%
Formula
Percentage change = [(992 - 521) / 521] x 100
Subtract the new number by the original number
992 - 521 = 471
471 ÷ 521 = 0.9040307101727447
0.9040307101727447 x 100 = 90.4%