237.04% is the change from 81 to 273
Calculation steps:
[( 273 - 81 ) ÷ 81] x 100 = 237.04%
Formula
Percentage change = [(273 - 81) / 81] x 100
Subtract the new number by the original number
273 - 81 = 192
192 ÷ 81 = 2.3703703703703702
2.3703703703703702 x 100 = 237.04%