34.36% is the change from 390 to 524
Calculation steps:
[( 524 - 390 ) ÷ 390] x 100 = 34.36%
Formula
Percentage change = [(524 - 390) / 390] x 100
Subtract the new number by the original number
524 - 390 = 134
134 ÷ 390 = 0.3435897435897436
0.3435897435897436 x 100 = 34.36%