366.27% is the change from 83 to 387
Calculation steps:
[( 387 - 83 ) ÷ 83] x 100 = 366.27%
Formula
Percentage change = [(387 - 83) / 83] x 100
Subtract the new number by the original number
387 - 83 = 304
304 ÷ 83 = 3.6626506024096384
3.6626506024096384 x 100 = 366.27%