45.13% is the change from 390 to 566
Calculation steps:
[( 566 - 390 ) ÷ 390] x 100 = 45.13%
Formula
Percentage change = [(566 - 390) / 390] x 100
Subtract the new number by the original number
566 - 390 = 176
176 ÷ 390 = 0.4512820512820513
0.4512820512820513 x 100 = 45.13%