148.72% is the change from 390 to 970
Calculation steps:
[( 970 - 390 ) ÷ 390] x 100 = 148.72%
Formula
Percentage change = [(970 - 390) / 390] x 100
Subtract the new number by the original number
970 - 390 = 580
580 ÷ 390 = 1.4871794871794872
1.4871794871794872 x 100 = 148.72%