67.6% is the change from 500 to 838
Calculation steps:
[( 838 - 500 ) ÷ 500] x 100 = 67.6%
Formula
Percentage change = [(838 - 500) / 500] x 100
Subtract the new number by the original number
838 - 500 = 338
338 ÷ 500 = 0.676
0.676 x 100 = 67.6%
Example