31.35% is the change from 386 to 507
Calculation steps:
[( 507 - 386 ) ÷ 386] x 100 = 31.35%
Formula
Percentage change = [(507 - 386) / 386] x 100
Subtract the new number by the original number
507 - 386 = 121
121 ÷ 386 = 0.3134715025906736
0.3134715025906736 x 100 = 31.35%