327.71% is the change from 83 to 355
Calculation steps:
[( 355 - 83 ) ÷ 83] x 100 = 327.71%
Formula
Percentage change = [(355 - 83) / 83] x 100
Subtract the new number by the original number
355 - 83 = 272
272 ÷ 83 = 3.2771084337349397
3.2771084337349397 x 100 = 327.71%