450.7% is the change from 71 to 391
Calculation steps:
[( 391 - 71 ) ÷ 71] x 100 = 450.7%
Formula
Percentage change = [(391 - 71) / 71] x 100
Subtract the new number by the original number
391 - 71 = 320
320 ÷ 71 = 4.507042253521127
4.507042253521127 x 100 = 450.7%