60% is the change from 500 to 800
Calculation steps:
[( 800 - 500 ) ÷ 500] x 100 = 60%
Formula
Percentage change = [(800 - 500) / 500] x 100
Subtract the new number by the original number
800 - 500 = 300
300 ÷ 500 = 0.6
0.6 x 100 = 60%
Example