287.13% is the change from 101 to 391
Calculation steps:
[( 391 - 101 ) ÷ 101] x 100 = 287.13%
Formula
Percentage change = [(391 - 101) / 101] x 100
Subtract the new number by the original number
391 - 101 = 290
290 ÷ 101 = 2.871287128712871
2.871287128712871 x 100 = 287.13%