15.23% is the change from 512 to 590
Calculation steps:
[( 590 - 512 ) ÷ 512] x 100 = 15.23%
Formula
Percentage change = [(590 - 512) / 512] x 100
Subtract the new number by the original number
590 - 512 = 78
78 ÷ 512 = 0.15234375
0.15234375 x 100 = 15.23%