208.43% is the change from 83 to 256
Calculation steps:
[( 256 - 83 ) ÷ 83] x 100 = 208.43%
Formula
Percentage change = [(256 - 83) / 83] x 100
Subtract the new number by the original number
256 - 83 = 173
173 ÷ 83 = 2.0843373493975905
2.0843373493975905 x 100 = 208.43%