146.15% is the change from 390 to 960
Calculation steps:
[( 960 - 390 ) ÷ 390] x 100 = 146.15%
Formula
Percentage change = [(960 - 390) / 390] x 100
Subtract the new number by the original number
960 - 390 = 570
570 ÷ 390 = 1.4615384615384615
1.4615384615384615 x 100 = 146.15%