56.86% is the change from 510 to 800
Calculation steps:
[( 800 - 510 ) ÷ 510] x 100 = 56.86%
Formula
Percentage change = [(800 - 510) / 510] x 100
Subtract the new number by the original number
800 - 510 = 290
290 ÷ 510 = 0.5686274509803921
0.5686274509803921 x 100 = 56.86%