149.49% is the change from 390 to 973
Calculation steps:
[( 973 - 390 ) ÷ 390] x 100 = 149.49%
Formula
Percentage change = [(973 - 390) / 390] x 100
Subtract the new number by the original number
973 - 390 = 583
583 ÷ 390 = 1.494871794871795
1.494871794871795 x 100 = 149.49%