30.77% is the change from 273 to 357
Calculation steps:
[( 357 - 273 ) ÷ 273] x 100 = 30.77%
Formula
Percentage change = [(357 - 273) / 273] x 100
Subtract the new number by the original number
357 - 273 = 84
84 ÷ 273 = 0.3076923076923077
0.3076923076923077 x 100 = 30.77%