34.39% is the change from 506 to 680
Calculation steps:
[( 680 - 506 ) ÷ 506] x 100 = 34.39%
Formula
Percentage change = [(680 - 506) / 506] x 100
Subtract the new number by the original number
680 - 506 = 174
174 ÷ 506 = 0.3438735177865613
0.3438735177865613 x 100 = 34.39%