148.34% is the change from 391 to 971
Calculation steps:
[( 971 - 391 ) ÷ 391] x 100 = 148.34%
Formula
Percentage change = [(971 - 391) / 391] x 100
Subtract the new number by the original number
971 - 391 = 580
580 ÷ 391 = 1.4833759590792839
1.4833759590792839 x 100 = 148.34%