53.08% is the change from 390 to 597
Calculation steps:
[( 597 - 390 ) ÷ 390] x 100 = 53.08%
Formula
Percentage change = [(597 - 390) / 390] x 100
Subtract the new number by the original number
597 - 390 = 207
207 ÷ 390 = 0.5307692307692308
0.5307692307692308 x 100 = 53.08%