58.8% is the change from 517 to 821
Calculation steps:
[( 821 - 517 ) ÷ 517] x 100 = 58.8%
Formula
Percentage change = [(821 - 517) / 517] x 100
Subtract the new number by the original number
821 - 517 = 304
304 ÷ 517 = 0.5880077369439072
0.5880077369439072 x 100 = 58.8%