59.96% is the change from 512 to 819
Calculation steps:
[( 819 - 512 ) ÷ 512] x 100 = 59.96%
Formula
Percentage change = [(819 - 512) / 512] x 100
Subtract the new number by the original number
819 - 512 = 307
307 ÷ 512 = 0.599609375
0.599609375 x 100 = 59.96%