60% is the change from 510 to 816
Calculation steps:
[( 816 - 510 ) ÷ 510] x 100 = 60%
Formula
Percentage change = [(816 - 510) / 510] x 100
Subtract the new number by the original number
816 - 510 = 306
306 ÷ 510 = 0.6
0.6 x 100 = 60%
Example