337.04% is the change from 81 to 354
Calculation steps:
[( 354 - 81 ) ÷ 81] x 100 = 337.04%
Formula
Percentage change = [(354 - 81) / 81] x 100
Subtract the new number by the original number
354 - 81 = 273
273 ÷ 81 = 3.3703703703703702
3.3703703703703702 x 100 = 337.04%