87.91% is the change from 521 to 979
Calculation steps:
[( 979 - 521 ) ÷ 521] x 100 = 87.91%
Formula
Percentage change = [(979 - 521) / 521] x 100
Subtract the new number by the original number
979 - 521 = 458
458 ÷ 521 = 0.8790786948176583
0.8790786948176583 x 100 = 87.91%