60.98% is the change from 510 to 821
Calculation steps:
[( 821 - 510 ) ÷ 510] x 100 = 60.98%
Formula
Percentage change = [(821 - 510) / 510] x 100
Subtract the new number by the original number
821 - 510 = 311
311 ÷ 510 = 0.6098039215686275
0.6098039215686275 x 100 = 60.98%