28.68% is the change from 394 to 507
Calculation steps:
[( 507 - 394 ) ÷ 394] x 100 = 28.68%
Formula
Percentage change = [(507 - 394) / 394] x 100
Subtract the new number by the original number
507 - 394 = 113
113 ÷ 394 = 0.2868020304568528
0.2868020304568528 x 100 = 28.68%