415.66% is the change from 83 to 428
Calculation steps:
[( 428 - 83 ) ÷ 83] x 100 = 415.66%
Formula
Percentage change = [(428 - 83) / 83] x 100
Subtract the new number by the original number
428 - 83 = 345
345 ÷ 83 = 4.156626506024097
4.156626506024097 x 100 = 415.66%