79.8% is the change from 500 to 899
Calculation steps:
[( 899 - 500 ) ÷ 500] x 100 = 79.8%
Formula
Percentage change = [(899 - 500) / 500] x 100
Subtract the new number by the original number
899 - 500 = 399
399 ÷ 500 = 0.798
0.798 x 100 = 79.8%
Example