60.59% is the change from 510 to 819
Calculation steps:
[( 819 - 510 ) ÷ 510] x 100 = 60.59%
Formula
Percentage change = [(819 - 510) / 510] x 100
Subtract the new number by the original number
819 - 510 = 309
309 ÷ 510 = 0.6058823529411764
0.6058823529411764 x 100 = 60.59%