37% is the change from 500 to 685
Calculation steps:
[( 685 - 500 ) ÷ 500] x 100 = 37%
Formula
Percentage change = [(685 - 500) / 500] x 100
Subtract the new number by the original number
685 - 500 = 185
185 ÷ 500 = 0.37
0.37 x 100 = 37%
Example