397.67% is the change from 86 to 428
Calculation steps:
[( 428 - 86 ) ÷ 86] x 100 = 397.67%
Formula
Percentage change = [(428 - 86) / 86] x 100
Subtract the new number by the original number
428 - 86 = 342
342 ÷ 86 = 3.9767441860465116
3.9767441860465116 x 100 = 397.67%