31.09% is the change from 386 to 506
Calculation steps:
[( 506 - 386 ) ÷ 386] x 100 = 31.09%
Formula
Percentage change = [(506 - 386) / 386] x 100
Subtract the new number by the original number
506 - 386 = 120
120 ÷ 386 = 0.31088082901554404
0.31088082901554404 x 100 = 31.09%