99.63% is the change from 273 to 545
Calculation steps:
[( 545 - 273 ) ÷ 273] x 100 = 99.63%
Formula
Percentage change = [(545 - 273) / 273] x 100
Subtract the new number by the original number
545 - 273 = 272
272 ÷ 273 = 0.9963369963369964
0.9963369963369964 x 100 = 99.63%