29.44% is the change from 394 to 510
Calculation steps:
[( 510 - 394 ) ÷ 394] x 100 = 29.44%
Formula
Percentage change = [(510 - 394) / 394] x 100
Subtract the new number by the original number
510 - 394 = 116
116 ÷ 394 = 0.29441624365482233
0.29441624365482233 x 100 = 29.44%