358.02% is the change from 81 to 371
Calculation steps:
[( 371 - 81 ) ÷ 81] x 100 = 358.02%
Formula
Percentage change = [(371 - 81) / 81] x 100
Subtract the new number by the original number
371 - 81 = 290
290 ÷ 81 = 3.580246913580247
3.580246913580247 x 100 = 358.02%