148.97% is the change from 390 to 971
Calculation steps:
[( 971 - 390 ) ÷ 390] x 100 = 148.97%
Formula
Percentage change = [(971 - 390) / 390] x 100
Subtract the new number by the original number
971 - 390 = 581
581 ÷ 390 = 1.4897435897435898
1.4897435897435898 x 100 = 148.97%